Home / 156,113.60-215,432-88,133.12

Finding the Fourth Proportional to 156,113.60, 215,432 and 88,133.12

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Solution

The fourth proportional to 156,113.60, 215,432 and 88,133.12 is: 121,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,113.60 : 215,432 = 88,133.12 : x
  2. Step 2: Convert to fraction form
    156,113.60/215,432 = 88,133.12/x
  3. Step 3: Cross multiply
    156,113.60x = 215,432 × 88,133.12
  4. Step 4: Simplify right side
    156,113.60x = 18,986,694,307.84
  5. Step 5: Solve for x
    x = 18,986,694,307.84/156,113.60
  6. Step 6: Final answer
    x = 121,621.01

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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.