Home / 103,655.17-155,789.49-86,000.36

Finding the Fourth Proportional to 103,655.17, 155,789.49 and 86,000.36

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Solution

The fourth proportional to 103,655.17, 155,789.49 and 86,000.36 is: 129,255.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,655.17 : 155,789.49 = 86,000.36 : x
  2. Step 2: Convert to fraction form
    103,655.17/155,789.49 = 86,000.36/x
  3. Step 3: Cross multiply
    103,655.17x = 155,789.49 × 86,000.36
  4. Step 4: Simplify right side
    103,655.17x = 13,397,952,224.22
  5. Step 5: Solve for x
    x = 13,397,952,224.22/103,655.17
  6. Step 6: Final answer
    x = 129,255.03

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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.