Home / 121,125.56-181,688.39-54,487.85

Finding the Fourth Proportional to 121,125.56, 181,688.39 and 54,487.85

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Solution

The fourth proportional to 121,125.56, 181,688.39 and 54,487.85 is: 81,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,125.56 : 181,688.39 = 54,487.85 : x
  2. Step 2: Convert to fraction form
    121,125.56/181,688.39 = 54,487.85/x
  3. Step 3: Cross multiply
    121,125.56x = 181,688.39 × 54,487.85
  4. Step 4: Simplify right side
    121,125.56x = 9,899,808,560.18
  5. Step 5: Solve for x
    x = 9,899,808,560.18/121,125.56
  6. Step 6: Final answer
    x = 81,731.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.