Home / 129,501.56-178,650.04-84,193.76

Finding the Fourth Proportional to 129,501.56, 178,650.04 and 84,193.76

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Solution

The fourth proportional to 129,501.56, 178,650.04 and 84,193.76 is: 116,147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,501.56 : 178,650.04 = 84,193.76 : x
  2. Step 2: Convert to fraction form
    129,501.56/178,650.04 = 84,193.76/x
  3. Step 3: Cross multiply
    129,501.56x = 178,650.04 × 84,193.76
  4. Step 4: Simplify right side
    129,501.56x = 15,041,218,591.75
  5. Step 5: Solve for x
    x = 15,041,218,591.75/129,501.56
  6. Step 6: Final answer
    x = 116,147.01

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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.