Home / 156,678.90-216,217.92-85,059.30

Finding the Fourth Proportional to 156,678.90, 216,217.92 and 85,059.30

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Solution

The fourth proportional to 156,678.90, 216,217.92 and 85,059.30 is: 117,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,678.90 : 216,217.92 = 85,059.30 : x
  2. Step 2: Convert to fraction form
    156,678.90/216,217.92 = 85,059.30/x
  3. Step 3: Cross multiply
    156,678.90x = 216,217.92 × 85,059.30
  4. Step 4: Simplify right side
    156,678.90x = 18,391,344,922.66
  5. Step 5: Solve for x
    x = 18,391,344,922.66/156,678.90
  6. Step 6: Final answer
    x = 117,382.40

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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.