Home / 145,328,327,101.39-217,991,575,909.28-78,207,189,298.13

Finding the Fourth Proportional to 145,328,327,101.39, 217,991,575,909.28 and 78,207,189,298.13

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Solution

The fourth proportional to 145,328,327,101.39, 217,991,575,909.28 and 78,207,189,298.13 is: 117,310,291,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328,327,101.39 : 217,991,575,909.28 = 78,207,189,298.13 : x
  2. Step 2: Convert to fraction form
    145,328,327,101.39/217,991,575,909.28 = 78,207,189,298.13/x
  3. Step 3: Cross multiply
    145,328,327,101.39x = 217,991,575,909.28 × 78,207,189,298.13
  4. Step 4: Simplify right side
    145,328,327,101.39x = 17,048,508,442,535,174,078,464
  5. Step 5: Solve for x
    x = 17,048,508,442,535,174,078,464/145,328,327,101.39
  6. Step 6: Final answer
    x = 117,310,291,686.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.