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Finding the Fourth Proportional to 101,732.40, 140,392.40 and 56,412.30

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Solution

The fourth proportional to 101,732.40, 140,392.40 and 56,412.30 is: 77,849.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,732.40 : 140,392.40 = 56,412.30 : x
  2. Step 2: Convert to fraction form
    101,732.40/140,392.40 = 56,412.30/x
  3. Step 3: Cross multiply
    101,732.40x = 140,392.40 × 56,412.30
  4. Step 4: Simplify right side
    101,732.40x = 7,919,858,186.52
  5. Step 5: Solve for x
    x = 7,919,858,186.52/101,732.40
  6. Step 6: Final answer
    x = 77,849.91

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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.