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Finding the Fourth Proportional to 121,155.96, 181,695.08 and 40,087.92

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Solution

The fourth proportional to 121,155.96, 181,695.08 and 40,087.92 is: 60,119.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,155.96 : 181,695.08 = 40,087.92 : x
  2. Step 2: Convert to fraction form
    121,155.96/181,695.08 = 40,087.92/x
  3. Step 3: Cross multiply
    121,155.96x = 181,695.08 × 40,087.92
  4. Step 4: Simplify right side
    121,155.96x = 7,283,777,831.43
  5. Step 5: Solve for x
    x = 7,283,777,831.43/121,155.96
  6. Step 6: Final answer
    x = 60,119.02

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1.5x scale

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.