Home / 121,149.81-181,718.03-42,269.58

Finding the Fourth Proportional to 121,149.81, 181,718.03 and 42,269.58

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Solution

The fourth proportional to 121,149.81, 181,718.03 and 42,269.58 is: 63,402.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,149.81 : 181,718.03 = 42,269.58 : x
  2. Step 2: Convert to fraction form
    121,149.81/181,718.03 = 42,269.58/x
  3. Step 3: Cross multiply
    121,149.81x = 181,718.03 × 42,269.58
  4. Step 4: Simplify right side
    121,149.81x = 7,681,144,912.20
  5. Step 5: Solve for x
    x = 7,681,144,912.20/121,149.81
  6. Step 6: Final answer
    x = 63,402.04

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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.