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Finding the Fourth Proportional to 101,950.90, 140,687.48 and 56,631.80

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Solution

The fourth proportional to 101,950.90, 140,687.48 and 56,631.80 is: 78,149.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,950.90 : 140,687.48 = 56,631.80 : x
  2. Step 2: Convert to fraction form
    101,950.90/140,687.48 = 56,631.80/x
  3. Step 3: Cross multiply
    101,950.90x = 140,687.48 × 56,631.80
  4. Step 4: Simplify right side
    101,950.90x = 7,967,385,229.86
  5. Step 5: Solve for x
    x = 7,967,385,229.86/101,950.90
  6. Step 6: Final answer
    x = 78,149.24

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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.