Home / 112,685.43-155,499.97-61,688.39

Finding the Fourth Proportional to 112,685.43, 155,499.97 and 61,688.39

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Solution

The fourth proportional to 112,685.43, 155,499.97 and 61,688.39 is: 85,126.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,685.43 : 155,499.97 = 61,688.39 : x
  2. Step 2: Convert to fraction form
    112,685.43/155,499.97 = 61,688.39/x
  3. Step 3: Cross multiply
    112,685.43x = 155,499.97 × 61,688.39
  4. Step 4: Simplify right side
    112,685.43x = 9,592,542,794.35
  5. Step 5: Solve for x
    x = 9,592,542,794.35/112,685.43
  6. Step 6: Final answer
    x = 85,126.74

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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.