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Finding the Fourth Proportional to 112,658.88, 155,503.80 and 64,943.94

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Solution

The fourth proportional to 112,658.88, 155,503.80 and 64,943.94 is: 89,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,658.88 : 155,503.80 = 64,943.94 : x
  2. Step 2: Convert to fraction form
    112,658.88/155,503.80 = 64,943.94/x
  3. Step 3: Cross multiply
    112,658.88x = 155,503.80 × 64,943.94
  4. Step 4: Simplify right side
    112,658.88x = 10,099,029,456.97
  5. Step 5: Solve for x
    x = 10,099,029,456.97/112,658.88
  6. Step 6: Final answer
    x = 89,642.55

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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.