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Finding the Fourth Proportional to 158,856.76, 238,215.16 and 74,640.88

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Solution

The fourth proportional to 158,856.76, 238,215.16 and 74,640.88 is: 111,928.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,856.76 : 238,215.16 = 74,640.88 : x
  2. Step 2: Convert to fraction form
    158,856.76/238,215.16 = 74,640.88/x
  3. Step 3: Cross multiply
    158,856.76x = 238,215.16 × 74,640.88
  4. Step 4: Simplify right side
    158,856.76x = 17,780,589,171.74
  5. Step 5: Solve for x
    x = 17,780,589,171.74/158,856.76
  6. Step 6: Final answer
    x = 111,928.44

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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.