Home / 136,128.60-204,192.90-98,512.20

Finding the Fourth Proportional to 136,128.60, 204,192.90 and 98,512.20

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Solution

The fourth proportional to 136,128.60, 204,192.90 and 98,512.20 is: 147,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,128.60 : 204,192.90 = 98,512.20 : x
  2. Step 2: Convert to fraction form
    136,128.60/204,192.90 = 98,512.20/x
  3. Step 3: Cross multiply
    136,128.60x = 204,192.90 × 98,512.20
  4. Step 4: Simplify right side
    136,128.60x = 20,115,491,803.38
  5. Step 5: Solve for x
    x = 20,115,491,803.38/136,128.60
  6. Step 6: Final answer
    x = 147,768.30

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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.