Home / 156,522.28-215,999.97-87,612.07

Finding the Fourth Proportional to 156,522.28, 215,999.97 and 87,612.07

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Solution

The fourth proportional to 156,522.28, 215,999.97 and 87,612.07 is: 120,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,522.28 : 215,999.97 = 87,612.07 : x
  2. Step 2: Convert to fraction form
    156,522.28/215,999.97 = 87,612.07/x
  3. Step 3: Cross multiply
    156,522.28x = 215,999.97 × 87,612.07
  4. Step 4: Simplify right side
    156,522.28x = 18,924,203,411.64
  5. Step 5: Solve for x
    x = 18,924,203,411.64/156,522.28
  6. Step 6: Final answer
    x = 120,904.22

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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.