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Finding the Fourth Proportional to 125,224.95, 172,810.05 and 67,865.91

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Solution

The fourth proportional to 125,224.95, 172,810.05 and 67,865.91 is: 93,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,224.95 : 172,810.05 = 67,865.91 : x
  2. Step 2: Convert to fraction form
    125,224.95/172,810.05 = 67,865.91/x
  3. Step 3: Cross multiply
    125,224.95x = 172,810.05 × 67,865.91
  4. Step 4: Simplify right side
    125,224.95x = 11,727,911,300.40
  5. Step 5: Solve for x
    x = 11,727,911,300.40/125,224.95
  6. Step 6: Final answer
    x = 93,654.75

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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.