Home / 129,237.66-178,347.96-72,649.04

Finding the Fourth Proportional to 129,237.66, 178,347.96 and 72,649.04

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Solution

The fourth proportional to 129,237.66, 178,347.96 and 72,649.04 is: 100,255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,237.66 : 178,347.96 = 72,649.04 : x
  2. Step 2: Convert to fraction form
    129,237.66/178,347.96 = 72,649.04/x
  3. Step 3: Cross multiply
    129,237.66x = 178,347.96 × 72,649.04
  4. Step 4: Simplify right side
    129,237.66x = 12,956,807,188.22
  5. Step 5: Solve for x
    x = 12,956,807,188.22/129,237.66
  6. Step 6: Final answer
    x = 100,255.66

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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.