Home / 102,008.76-140,778.30-56,687.04

Finding the Fourth Proportional to 102,008.76, 140,778.30 and 56,687.04

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Solution

The fourth proportional to 102,008.76, 140,778.30 and 56,687.04 is: 78,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,008.76 : 140,778.30 = 56,687.04 : x
  2. Step 2: Convert to fraction form
    102,008.76/140,778.30 = 56,687.04/x
  3. Step 3: Cross multiply
    102,008.76x = 140,778.30 × 56,687.04
  4. Step 4: Simplify right side
    102,008.76x = 7,980,305,123.23
  5. Step 5: Solve for x
    x = 7,980,305,123.23/102,008.76
  6. Step 6: Final answer
    x = 78,231.57

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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.