Home / 112,868.60-155,760.42-61,885.98

Finding the Fourth Proportional to 112,868.60, 155,760.42 and 61,885.98

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Solution

The fourth proportional to 112,868.60, 155,760.42 and 61,885.98 is: 85,403.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,868.60 : 155,760.42 = 61,885.98 : x
  2. Step 2: Convert to fraction form
    112,868.60/155,760.42 = 61,885.98/x
  3. Step 3: Cross multiply
    112,868.60x = 155,760.42 × 61,885.98
  4. Step 4: Simplify right side
    112,868.60x = 9,639,386,236.91
  5. Step 5: Solve for x
    x = 9,639,386,236.91/112,868.60
  6. Step 6: Final answer
    x = 85,403.62

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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.