Home / 156,838.17-216,433.56-85,218.71

Finding the Fourth Proportional to 156,838.17, 216,433.56 and 85,218.71

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Solution

The fourth proportional to 156,838.17, 216,433.56 and 85,218.71 is: 117,600.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,838.17 : 216,433.56 = 85,218.71 : x
  2. Step 2: Convert to fraction form
    156,838.17/216,433.56 = 85,218.71/x
  3. Step 3: Cross multiply
    156,838.17x = 216,433.56 × 85,218.71
  4. Step 4: Simplify right side
    156,838.17x = 18,444,187,701.74
  5. Step 5: Solve for x
    x = 18,444,187,701.74/156,838.17
  6. Step 6: Final answer
    x = 117,600.12

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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.