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Finding the Fourth Proportional to 99,492.71, 137,298.65 and 54,170.17

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Solution

The fourth proportional to 99,492.71, 137,298.65 and 54,170.17 is: 74,754.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,492.71 : 137,298.65 = 54,170.17 : x
  2. Step 2: Convert to fraction form
    99,492.71/137,298.65 = 54,170.17/x
  3. Step 3: Cross multiply
    99,492.71x = 137,298.65 × 54,170.17
  4. Step 4: Simplify right side
    99,492.71x = 7,437,490,597.17
  5. Step 5: Solve for x
    x = 7,437,490,597.17/99,492.71
  6. Step 6: Final answer
    x = 74,754.13

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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.