Home / 81,281.20-112,198.15-61,196.34

Finding the Fourth Proportional to 81,281.20, 112,198.15 and 61,196.34

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Solution

The fourth proportional to 81,281.20, 112,198.15 and 61,196.34 is: 84,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.20 : 112,198.15 = 61,196.34 : x
  2. Step 2: Convert to fraction form
    81,281.20/112,198.15 = 61,196.34/x
  3. Step 3: Cross multiply
    81,281.20x = 112,198.15 × 61,196.34
  4. Step 4: Simplify right side
    81,281.20x = 6,866,116,211.27
  5. Step 5: Solve for x
    x = 6,866,116,211.27/81,281.20
  6. Step 6: Final answer
    x = 84,473.61

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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.