Home / 129,483.84-178,691.04-72,897.24

Finding the Fourth Proportional to 129,483.84, 178,691.04 and 72,897.24

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Solution

The fourth proportional to 129,483.84, 178,691.04 and 72,897.24 is: 100,600.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,483.84 : 178,691.04 = 72,897.24 : x
  2. Step 2: Convert to fraction form
    129,483.84/178,691.04 = 72,897.24/x
  3. Step 3: Cross multiply
    129,483.84x = 178,691.04 × 72,897.24
  4. Step 4: Simplify right side
    129,483.84x = 13,026,083,628.73
  5. Step 5: Solve for x
    x = 13,026,083,628.73/129,483.84
  6. Step 6: Final answer
    x = 100,600.07

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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.