Home / 156,233.71-215,587.11-87,310.45

Finding the Fourth Proportional to 156,233.71, 215,587.11 and 87,310.45

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Solution

The fourth proportional to 156,233.71, 215,587.11 and 87,310.45 is: 120,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,233.71 : 215,587.11 = 87,310.45 : x
  2. Step 2: Convert to fraction form
    156,233.71/215,587.11 = 87,310.45/x
  3. Step 3: Cross multiply
    156,233.71x = 215,587.11 × 87,310.45
  4. Step 4: Simplify right side
    156,233.71x = 18,823,007,588.30
  5. Step 5: Solve for x
    x = 18,823,007,588.30/156,233.71
  6. Step 6: Final answer
    x = 120,479.81

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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.