Home / 129,236.64-178,127.28-98,599.20

Finding the Fourth Proportional to 129,236.64, 178,127.28 and 98,599.20

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Solution

The fourth proportional to 129,236.64, 178,127.28 and 98,599.20 is: 135,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,236.64 : 178,127.28 = 98,599.20 : x
  2. Step 2: Convert to fraction form
    129,236.64/178,127.28 = 98,599.20/x
  3. Step 3: Cross multiply
    129,236.64x = 178,127.28 × 98,599.20
  4. Step 4: Simplify right side
    129,236.64x = 17,563,207,306.18
  5. Step 5: Solve for x
    x = 17,563,207,306.18/129,236.64
  6. Step 6: Final answer
    x = 135,899.60

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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.