Home / 105,631.16-158,340.12-66,215.95

Finding the Fourth Proportional to 105,631.16, 158,340.12 and 66,215.95

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Solution

The fourth proportional to 105,631.16, 158,340.12 and 66,215.95 is: 99,257.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,631.16 : 158,340.12 = 66,215.95 : x
  2. Step 2: Convert to fraction form
    105,631.16/158,340.12 = 66,215.95/x
  3. Step 3: Cross multiply
    105,631.16x = 158,340.12 × 66,215.95
  4. Step 4: Simplify right side
    105,631.16x = 10,484,640,824.75
  5. Step 5: Solve for x
    x = 10,484,640,824.75/105,631.16
  6. Step 6: Final answer
    x = 99,257.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.