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Finding the Fourth Proportional to 107,213.62, 147,857.96 and 66,931.12

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Solution

The fourth proportional to 107,213.62, 147,857.96 and 66,931.12 is: 92,304.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,213.62 : 147,857.96 = 66,931.12 : x
  2. Step 2: Convert to fraction form
    107,213.62/147,857.96 = 66,931.12/x
  3. Step 3: Cross multiply
    107,213.62x = 147,857.96 × 66,931.12
  4. Step 4: Simplify right side
    107,213.62x = 9,896,298,863.72
  5. Step 5: Solve for x
    x = 9,896,298,863.72/107,213.62
  6. Step 6: Final answer
    x = 92,304.49

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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.