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Finding the Fourth Proportional to 112,963.68, 155,912.04 and 65,214.18

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Solution

The fourth proportional to 112,963.68, 155,912.04 and 65,214.18 is: 90,008.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,963.68 : 155,912.04 = 65,214.18 : x
  2. Step 2: Convert to fraction form
    112,963.68/155,912.04 = 65,214.18/x
  3. Step 3: Cross multiply
    112,963.68x = 155,912.04 × 65,214.18
  4. Step 4: Simplify right side
    112,963.68x = 10,167,675,840.73
  5. Step 5: Solve for x
    x = 10,167,675,840.73/112,963.68
  6. Step 6: Final answer
    x = 90,008.36

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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.