Home / 129,417.44-178,597.34-72,057.56

Finding the Fourth Proportional to 129,417.44, 178,597.34 and 72,057.56

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Solution

The fourth proportional to 129,417.44, 178,597.34 and 72,057.56 is: 99,440.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,417.44 : 178,597.34 = 72,057.56 : x
  2. Step 2: Convert to fraction form
    129,417.44/178,597.34 = 72,057.56/x
  3. Step 3: Cross multiply
    129,417.44x = 178,597.34 × 72,057.56
  4. Step 4: Simplify right side
    129,417.44x = 12,869,288,542.89
  5. Step 5: Solve for x
    x = 12,869,288,542.89/129,417.44
  6. Step 6: Final answer
    x = 99,440.14

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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.