Home / 156,966.40-216,614.10-85,346.70

Finding the Fourth Proportional to 156,966.40, 216,614.10 and 85,346.70

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Solution

The fourth proportional to 156,966.40, 216,614.10 and 85,346.70 is: 117,778.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,966.40 : 216,614.10 = 85,346.70 : x
  2. Step 2: Convert to fraction form
    156,966.40/216,614.10 = 85,346.70/x
  3. Step 3: Cross multiply
    156,966.40x = 216,614.10 × 85,346.70
  4. Step 4: Simplify right side
    156,966.40x = 18,487,298,608.47
  5. Step 5: Solve for x
    x = 18,487,298,608.47/156,966.40
  6. Step 6: Final answer
    x = 117,778.70

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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.