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Finding the Fourth Proportional to 112,757.40, 155,534.40 and 72,523.44

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Solution

The fourth proportional to 112,757.40, 155,534.40 and 72,523.44 is: 100,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,757.40 : 155,534.40 = 72,523.44 : x
  2. Step 2: Convert to fraction form
    112,757.40/155,534.40 = 72,523.44/x
  3. Step 3: Cross multiply
    112,757.40x = 155,534.40 × 72,523.44
  4. Step 4: Simplify right side
    112,757.40x = 11,279,889,726.34
  5. Step 5: Solve for x
    x = 11,279,889,726.34/112,757.40
  6. Step 6: Final answer
    x = 100,036.80

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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.