Home / 121,057.28-181,428.60-67,747.04

Finding the Fourth Proportional to 121,057.28, 181,428.60 and 67,747.04

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Solution

The fourth proportional to 121,057.28, 181,428.60 and 67,747.04 is: 101,532.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,057.28 : 181,428.60 = 67,747.04 : x
  2. Step 2: Convert to fraction form
    121,057.28/181,428.60 = 67,747.04/x
  3. Step 3: Cross multiply
    121,057.28x = 181,428.60 × 67,747.04
  4. Step 4: Simplify right side
    121,057.28x = 12,291,250,621.34
  5. Step 5: Solve for x
    x = 12,291,250,621.34/121,057.28
  6. Step 6: Final answer
    x = 101,532.52

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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.