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Finding the Fourth Proportional to 109,915.80, 151,635.66 and 64,573.32

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Solution

The fourth proportional to 109,915.80, 151,635.66 and 64,573.32 is: 89,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,915.80 : 151,635.66 = 64,573.32 : x
  2. Step 2: Convert to fraction form
    109,915.80/151,635.66 = 64,573.32/x
  3. Step 3: Cross multiply
    109,915.80x = 151,635.66 × 64,573.32
  4. Step 4: Simplify right side
    109,915.80x = 9,791,617,996.59
  5. Step 5: Solve for x
    x = 9,791,617,996.59/109,915.80
  6. Step 6: Final answer
    x = 89,082.90

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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.