Home / 121,154.32-181,561.32-103,292.60

Finding the Fourth Proportional to 121,154.32, 181,561.32 and 103,292.60

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Solution

The fourth proportional to 121,154.32, 181,561.32 and 103,292.60 is: 154,793.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,154.32 : 181,561.32 = 103,292.60 : x
  2. Step 2: Convert to fraction form
    121,154.32/181,561.32 = 103,292.60/x
  3. Step 3: Cross multiply
    121,154.32x = 181,561.32 × 103,292.60
  4. Step 4: Simplify right side
    121,154.32x = 18,753,940,802.23
  5. Step 5: Solve for x
    x = 18,753,940,802.23/121,154.32
  6. Step 6: Final answer
    x = 154,793.83

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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.