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Finding the Fourth Proportional to 125,017.59, 172,524.27 and 68,428.98

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Solution

The fourth proportional to 125,017.59, 172,524.27 and 68,428.98 is: 94,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,017.59 : 172,524.27 = 68,428.98 : x
  2. Step 2: Convert to fraction form
    125,017.59/172,524.27 = 68,428.98/x
  3. Step 3: Cross multiply
    125,017.59x = 172,524.27 × 68,428.98
  4. Step 4: Simplify right side
    125,017.59x = 11,805,659,821.34
  5. Step 5: Solve for x
    x = 11,805,659,821.34/125,017.59
  6. Step 6: Final answer
    x = 94,431.99

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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.