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Finding the Fourth Proportional to 101,934.30, 140,661.28 and 56,607.90

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Solution

The fourth proportional to 101,934.30, 140,661.28 and 56,607.90 is: 78,114.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,934.30 : 140,661.28 = 56,607.90 : x
  2. Step 2: Convert to fraction form
    101,934.30/140,661.28 = 56,607.90/x
  3. Step 3: Cross multiply
    101,934.30x = 140,661.28 × 56,607.90
  4. Step 4: Simplify right side
    101,934.30x = 7,962,539,672.11
  5. Step 5: Solve for x
    x = 7,962,539,672.11/101,934.30
  6. Step 6: Final answer
    x = 78,114.43

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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.