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Finding the Fourth Proportional to 121,253.70, 181,880.55 and 54,768.90

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Solution

The fourth proportional to 121,253.70, 181,880.55 and 54,768.90 is: 82,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,253.70 : 181,880.55 = 54,768.90 : x
  2. Step 2: Convert to fraction form
    121,253.70/181,880.55 = 54,768.90/x
  3. Step 3: Cross multiply
    121,253.70x = 181,880.55 × 54,768.90
  4. Step 4: Simplify right side
    121,253.70x = 9,961,397,654.90
  5. Step 5: Solve for x
    x = 9,961,397,654.90/121,253.70
  6. Step 6: Final answer
    x = 82,153.35

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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.