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Finding the Fourth Proportional to 121,329.60, 181,951.20 and 54,801.60

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Solution

The fourth proportional to 121,329.60, 181,951.20 and 54,801.60 is: 82,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,329.60 : 181,951.20 = 54,801.60 : x
  2. Step 2: Convert to fraction form
    121,329.60/181,951.20 = 54,801.60/x
  3. Step 3: Cross multiply
    121,329.60x = 181,951.20 × 54,801.60
  4. Step 4: Simplify right side
    121,329.60x = 9,971,216,881.92
  5. Step 5: Solve for x
    x = 9,971,216,881.92/121,329.60
  6. Step 6: Final answer
    x = 82,182.89

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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.