Home / 112,961.28-155,889.45-61,976.19

Finding the Fourth Proportional to 112,961.28, 155,889.45 and 61,976.19

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Solution

The fourth proportional to 112,961.28, 155,889.45 and 61,976.19 is: 85,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,961.28 : 155,889.45 = 61,976.19 : x
  2. Step 2: Convert to fraction form
    112,961.28/155,889.45 = 61,976.19/x
  3. Step 3: Cross multiply
    112,961.28x = 155,889.45 × 61,976.19
  4. Step 4: Simplify right side
    112,961.28x = 9,661,434,172.20
  5. Step 5: Solve for x
    x = 9,661,434,172.20/112,961.28
  6. Step 6: Final answer
    x = 85,528.72

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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.