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Finding the Fourth Proportional to 101,456.87, 140,008.64 and 56,134.86

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Solution

The fourth proportional to 101,456.87, 140,008.64 and 56,134.86 is: 77,465.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,456.87 : 140,008.64 = 56,134.86 : x
  2. Step 2: Convert to fraction form
    101,456.87/140,008.64 = 56,134.86/x
  3. Step 3: Cross multiply
    101,456.87x = 140,008.64 × 56,134.86
  4. Step 4: Simplify right side
    101,456.87x = 7,859,364,809.99
  5. Step 5: Solve for x
    x = 7,859,364,809.99/101,456.87
  6. Step 6: Final answer
    x = 77,465.08

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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.