Home / 156,780.15-216,357.72-85,160.16

Finding the Fourth Proportional to 156,780.15, 216,357.72 and 85,160.16

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Solution

The fourth proportional to 156,780.15, 216,357.72 and 85,160.16 is: 117,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.15 : 216,357.72 = 85,160.16 : x
  2. Step 2: Convert to fraction form
    156,780.15/216,357.72 = 85,160.16/x
  3. Step 3: Cross multiply
    156,780.15x = 216,357.72 × 85,160.16
  4. Step 4: Simplify right side
    156,780.15x = 18,425,056,544.85
  5. Step 5: Solve for x
    x = 18,425,056,544.85/156,780.15
  6. Step 6: Final answer
    x = 117,521.62

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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.