Home / 145,594,387.12-200,921,429.64-80,404,291.12

Finding the Fourth Proportional to 145,594,387.12, 200,921,429.64 and 80,404,291.12

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Solution

The fourth proportional to 145,594,387.12, 200,921,429.64 and 80,404,291.12 is: 110,958,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,594,387.12 : 200,921,429.64 = 80,404,291.12 : x
  2. Step 2: Convert to fraction form
    145,594,387.12/200,921,429.64 = 80,404,291.12/x
  3. Step 3: Cross multiply
    145,594,387.12x = 200,921,429.64 × 80,404,291.12
  4. Step 4: Simplify right side
    145,594,387.12x = 16,154,945,121,021,156
  5. Step 5: Solve for x
    x = 16,154,945,121,021,156/145,594,387.12
  6. Step 6: Final answer
    x = 110,958,570.87

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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.