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Finding the Fourth Proportional to 136,779.53, 188,787.24 and 80,209.13

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Solution

The fourth proportional to 136,779.53, 188,787.24 and 80,209.13 is: 110,707.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,779.53 : 188,787.24 = 80,209.13 : x
  2. Step 2: Convert to fraction form
    136,779.53/188,787.24 = 80,209.13/x
  3. Step 3: Cross multiply
    136,779.53x = 188,787.24 × 80,209.13
  4. Step 4: Simplify right side
    136,779.53x = 15,142,460,275.50
  5. Step 5: Solve for x
    x = 15,142,460,275.50/136,779.53
  6. Step 6: Final answer
    x = 110,707.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.