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Finding the Fourth Proportional to 101,508.77, 140,078.52 and 56,186.84

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Solution

The fourth proportional to 101,508.77, 140,078.52 and 56,186.84 is: 77,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,508.77 : 140,078.52 = 56,186.84 : x
  2. Step 2: Convert to fraction form
    101,508.77/140,078.52 = 56,186.84/x
  3. Step 3: Cross multiply
    101,508.77x = 140,078.52 × 56,186.84
  4. Step 4: Simplify right side
    101,508.77x = 7,870,569,390.68
  5. Step 5: Solve for x
    x = 7,870,569,390.68/101,508.77
  6. Step 6: Final answer
    x = 77,535.86

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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.