Home / 112,856.88-155,734.20-61,861.44

Finding the Fourth Proportional to 112,856.88, 155,734.20 and 61,861.44

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Solution

The fourth proportional to 112,856.88, 155,734.20 and 61,861.44 is: 85,364.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,856.88 : 155,734.20 = 61,861.44 : x
  2. Step 2: Convert to fraction form
    112,856.88/155,734.20 = 61,861.44/x
  3. Step 3: Cross multiply
    112,856.88x = 155,734.20 × 61,861.44
  4. Step 4: Simplify right side
    112,856.88x = 9,633,941,869.25
  5. Step 5: Solve for x
    x = 9,633,941,869.25/112,856.88
  6. Step 6: Final answer
    x = 85,364.24

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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.