Home / 156,941.40-216,578.66-85,320.92

Finding the Fourth Proportional to 156,941.40, 216,578.66 and 85,320.92

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Solution

The fourth proportional to 156,941.40, 216,578.66 and 85,320.92 is: 117,742.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,941.40 : 216,578.66 = 85,320.92 : x
  2. Step 2: Convert to fraction form
    156,941.40/216,578.66 = 85,320.92/x
  3. Step 3: Cross multiply
    156,941.40x = 216,578.66 × 85,320.92
  4. Step 4: Simplify right side
    156,941.40x = 18,478,690,523.57
  5. Step 5: Solve for x
    x = 18,478,690,523.57/156,941.40
  6. Step 6: Final answer
    x = 117,742.61

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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.