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Finding the Fourth Proportional to 101,712.11, 140,371.02 and 56,404.30

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Solution

The fourth proportional to 101,712.11, 140,371.02 and 56,404.30 is: 77,842.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,712.11 : 140,371.02 = 56,404.30 : x
  2. Step 2: Convert to fraction form
    101,712.11/140,371.02 = 56,404.30/x
  3. Step 3: Cross multiply
    101,712.11x = 140,371.02 × 56,404.30
  4. Step 4: Simplify right side
    101,712.11x = 7,917,529,123.39
  5. Step 5: Solve for x
    x = 7,917,529,123.39/101,712.11
  6. Step 6: Final answer
    x = 77,842.54

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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.