Home / 105,630.38-158,338.95-66,215.17

Finding the Fourth Proportional to 105,630.38, 158,338.95 and 66,215.17

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Solution

The fourth proportional to 105,630.38, 158,338.95 and 66,215.17 is: 99,255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,630.38 : 158,338.95 = 66,215.17 : x
  2. Step 2: Convert to fraction form
    105,630.38/158,338.95 = 66,215.17/x
  3. Step 3: Cross multiply
    105,630.38x = 158,338.95 × 66,215.17
  4. Step 4: Simplify right side
    105,630.38x = 10,484,439,369.10
  5. Step 5: Solve for x
    x = 10,484,439,369.10/105,630.38
  6. Step 6: Final answer
    x = 99,255.91

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1.5x scale

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.