Home / 129,659.40-178,522.80-110,240.13

Finding the Fourth Proportional to 129,659.40, 178,522.80 and 110,240.13

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Solution

The fourth proportional to 129,659.40, 178,522.80 and 110,240.13 is: 151,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,659.40 : 178,522.80 = 110,240.13 : x
  2. Step 2: Convert to fraction form
    129,659.40/178,522.80 = 110,240.13/x
  3. Step 3: Cross multiply
    129,659.40x = 178,522.80 × 110,240.13
  4. Step 4: Simplify right side
    129,659.40x = 19,680,376,679.96
  5. Step 5: Solve for x
    x = 19,680,376,679.96/129,659.40
  6. Step 6: Final answer
    x = 151,785.19

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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.