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Finding the Fourth Proportional to 121,873.10, 182,735.84 and 79,702.28

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Solution

The fourth proportional to 121,873.10, 182,735.84 and 79,702.28 is: 119,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,873.10 : 182,735.84 = 79,702.28 : x
  2. Step 2: Convert to fraction form
    121,873.10/182,735.84 = 79,702.28/x
  3. Step 3: Cross multiply
    121,873.10x = 182,735.84 × 79,702.28
  4. Step 4: Simplify right side
    121,873.10x = 14,564,463,085.72
  5. Step 5: Solve for x
    x = 14,564,463,085.72/121,873.10
  6. Step 6: Final answer
    x = 119,505.15

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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.