Home / 103,239.30-142,480.98-57,929.52

Finding the Fourth Proportional to 103,239.30, 142,480.98 and 57,929.52

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Solution

The fourth proportional to 103,239.30, 142,480.98 and 57,929.52 is: 79,948.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,239.30 : 142,480.98 = 57,929.52 : x
  2. Step 2: Convert to fraction form
    103,239.30/142,480.98 = 57,929.52/x
  3. Step 3: Cross multiply
    103,239.30x = 142,480.98 × 57,929.52
  4. Step 4: Simplify right side
    103,239.30x = 8,253,854,780.53
  5. Step 5: Solve for x
    x = 8,253,854,780.53/103,239.30
  6. Step 6: Final answer
    x = 79,948.77

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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.