Home / 112,896.56-155,761.80-65,143.64

Finding the Fourth Proportional to 112,896.56, 155,761.80 and 65,143.64

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Solution

The fourth proportional to 112,896.56, 155,761.80 and 65,143.64 is: 89,877.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,896.56 : 155,761.80 = 65,143.64 : x
  2. Step 2: Convert to fraction form
    112,896.56/155,761.80 = 65,143.64/x
  3. Step 3: Cross multiply
    112,896.56x = 155,761.80 × 65,143.64
  4. Step 4: Simplify right side
    112,896.56x = 10,146,890,624.95
  5. Step 5: Solve for x
    x = 10,146,890,624.95/112,896.56
  6. Step 6: Final answer
    x = 89,877.77

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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.