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Finding the Fourth Proportional to 125,307.64, 172,927.96 and 71,601.40

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Solution

The fourth proportional to 125,307.64, 172,927.96 and 71,601.40 is: 98,811.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,307.64 : 172,927.96 = 71,601.40 : x
  2. Step 2: Convert to fraction form
    125,307.64/172,927.96 = 71,601.40/x
  3. Step 3: Cross multiply
    125,307.64x = 172,927.96 × 71,601.40
  4. Step 4: Simplify right side
    125,307.64x = 12,381,884,035.14
  5. Step 5: Solve for x
    x = 12,381,884,035.14/125,307.64
  6. Step 6: Final answer
    x = 98,811.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.