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Finding the Fourth Proportional to 121,155.60, 181,344.60 and 94,717.20

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Solution

The fourth proportional to 121,155.60, 181,344.60 and 94,717.20 is: 141,771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,155.60 : 181,344.60 = 94,717.20 : x
  2. Step 2: Convert to fraction form
    121,155.60/181,344.60 = 94,717.20/x
  3. Step 3: Cross multiply
    121,155.60x = 181,344.60 × 94,717.20
  4. Step 4: Simplify right side
    121,155.60x = 17,176,452,747.12
  5. Step 5: Solve for x
    x = 17,176,452,747.12/121,155.60
  6. Step 6: Final answer
    x = 141,771.84

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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.