Home / 145,464,402.90-200,745,131.82-79,389,139.16

Finding the Fourth Proportional to 145,464,402.90, 200,745,131.82 and 79,389,139.16

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Solution

The fourth proportional to 145,464,402.90, 200,745,131.82 and 79,389,139.16 is: 109,559,334.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,464,402.90 : 200,745,131.82 = 79,389,139.16 : x
  2. Step 2: Convert to fraction form
    145,464,402.90/200,745,131.82 = 79,389,139.16/x
  3. Step 3: Cross multiply
    145,464,402.90x = 200,745,131.82 × 79,389,139.16
  4. Step 4: Simplify right side
    145,464,402.90x = 15,936,983,205,750,522
  5. Step 5: Solve for x
    x = 15,936,983,205,750,522/145,464,402.90
  6. Step 6: Final answer
    x = 109,559,334.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.