Home / 112,508.77-155,188.95-72,158.62

Finding the Fourth Proportional to 112,508.77, 155,188.95 and 72,158.62

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Solution

The fourth proportional to 112,508.77, 155,188.95 and 72,158.62 is: 99,531.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,508.77 : 155,188.95 = 72,158.62 : x
  2. Step 2: Convert to fraction form
    112,508.77/155,188.95 = 72,158.62/x
  3. Step 3: Cross multiply
    112,508.77x = 155,188.95 × 72,158.62
  4. Step 4: Simplify right side
    112,508.77x = 11,198,220,844.55
  5. Step 5: Solve for x
    x = 11,198,220,844.55/112,508.77
  6. Step 6: Final answer
    x = 99,531.98

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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.