Home / 103,142.20-142,323.51-62,841.28

Finding the Fourth Proportional to 103,142.20, 142,323.51 and 62,841.28

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Solution

The fourth proportional to 103,142.20, 142,323.51 and 62,841.28 is: 86,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,142.20 : 142,323.51 = 62,841.28 : x
  2. Step 2: Convert to fraction form
    103,142.20/142,323.51 = 62,841.28/x
  3. Step 3: Cross multiply
    103,142.20x = 142,323.51 × 62,841.28
  4. Step 4: Simplify right side
    103,142.20x = 8,943,791,542.49
  5. Step 5: Solve for x
    x = 8,943,791,542.49/103,142.20
  6. Step 6: Final answer
    x = 86,713.21

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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.