Home / 138,547.74-207,757.02-71,970

Finding the Fourth Proportional to 138,547.74, 207,757.02 and 71,970

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Solution

The fourth proportional to 138,547.74, 207,757.02 and 71,970 is: 107,921.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,547.74 : 207,757.02 = 71,970 : x
  2. Step 2: Convert to fraction form
    138,547.74/207,757.02 = 71,970/x
  3. Step 3: Cross multiply
    138,547.74x = 207,757.02 × 71,970
  4. Step 4: Simplify right side
    138,547.74x = 14,952,272,729.40
  5. Step 5: Solve for x
    x = 14,952,272,729.40/138,547.74
  6. Step 6: Final answer
    x = 107,921.45

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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.