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Finding the Fourth Proportional to 125,061.40, 172,584.72 and 68,472.76

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Solution

The fourth proportional to 125,061.40, 172,584.72 and 68,472.76 is: 94,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,061.40 : 172,584.72 = 68,472.76 : x
  2. Step 2: Convert to fraction form
    125,061.40/172,584.72 = 68,472.76/x
  3. Step 3: Cross multiply
    125,061.40x = 172,584.72 × 68,472.76
  4. Step 4: Simplify right side
    125,061.40x = 11,817,352,112.23
  5. Step 5: Solve for x
    x = 11,817,352,112.23/125,061.40
  6. Step 6: Final answer
    x = 94,492.40

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1.5x scale

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.