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Finding the Fourth Proportional to 99,115.16, 136,892.44 and 65,274.92

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Solution

The fourth proportional to 99,115.16, 136,892.44 and 65,274.92 is: 90,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,115.16 : 136,892.44 = 65,274.92 : x
  2. Step 2: Convert to fraction form
    99,115.16/136,892.44 = 65,274.92/x
  3. Step 3: Cross multiply
    99,115.16x = 136,892.44 × 65,274.92
  4. Step 4: Simplify right side
    99,115.16x = 8,935,643,069.60
  5. Step 5: Solve for x
    x = 8,935,643,069.60/99,115.16
  6. Step 6: Final answer
    x = 90,154.15

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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.