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Finding the Fourth Proportional to 101,508.68, 140,080.02 and 56,186.70

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Solution

The fourth proportional to 101,508.68, 140,080.02 and 56,186.70 is: 77,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,508.68 : 140,080.02 = 56,186.70 : x
  2. Step 2: Convert to fraction form
    101,508.68/140,080.02 = 56,186.70/x
  3. Step 3: Cross multiply
    101,508.68x = 140,080.02 × 56,186.70
  4. Step 4: Simplify right side
    101,508.68x = 7,870,634,059.73
  5. Step 5: Solve for x
    x = 7,870,634,059.73/101,508.68
  6. Step 6: Final answer
    x = 77,536.56

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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.