Home / 121,331.28-181,881.72-42,394.08

Finding the Fourth Proportional to 121,331.28, 181,881.72 and 42,394.08

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Solution

The fourth proportional to 121,331.28, 181,881.72 and 42,394.08 is: 63,550.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,331.28 : 181,881.72 = 42,394.08 : x
  2. Step 2: Convert to fraction form
    121,331.28/181,881.72 = 42,394.08/x
  3. Step 3: Cross multiply
    121,331.28x = 181,881.72 × 42,394.08
  4. Step 4: Simplify right side
    121,331.28x = 7,710,708,188.22
  5. Step 5: Solve for x
    x = 7,710,708,188.22/121,331.28
  6. Step 6: Final answer
    x = 63,550.87

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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.