Home / 121,102.32-181,654.50-42,216.40

Finding the Fourth Proportional to 121,102.32, 181,654.50 and 42,216.40

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Solution

The fourth proportional to 121,102.32, 181,654.50 and 42,216.40 is: 63,324.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,102.32 : 181,654.50 = 42,216.40 : x
  2. Step 2: Convert to fraction form
    121,102.32/181,654.50 = 42,216.40/x
  3. Step 3: Cross multiply
    121,102.32x = 181,654.50 × 42,216.40
  4. Step 4: Simplify right side
    121,102.32x = 7,668,799,033.80
  5. Step 5: Solve for x
    x = 7,668,799,033.80/121,102.32
  6. Step 6: Final answer
    x = 63,324.96

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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.