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Finding the Fourth Proportional to 101,561.96, 140,154.72 and 56,239.76

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Solution

The fourth proportional to 101,561.96, 140,154.72 and 56,239.76 is: 77,610.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,561.96 : 140,154.72 = 56,239.76 : x
  2. Step 2: Convert to fraction form
    101,561.96/140,154.72 = 56,239.76/x
  3. Step 3: Cross multiply
    101,561.96x = 140,154.72 × 56,239.76
  4. Step 4: Simplify right side
    101,561.96x = 7,882,267,815.67
  5. Step 5: Solve for x
    x = 7,882,267,815.67/101,561.96
  6. Step 6: Final answer
    x = 77,610.43

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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.