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Finding the Fourth Proportional to 147,450.72, 203,482.08 and 80,382.72

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Solution

The fourth proportional to 147,450.72, 203,482.08 and 80,382.72 is: 110,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,450.72 : 203,482.08 = 80,382.72 : x
  2. Step 2: Convert to fraction form
    147,450.72/203,482.08 = 80,382.72/x
  3. Step 3: Cross multiply
    147,450.72x = 203,482.08 × 80,382.72
  4. Step 4: Simplify right side
    147,450.72x = 16,356,443,061.66
  5. Step 5: Solve for x
    x = 16,356,443,061.66/147,450.72
  6. Step 6: Final answer
    x = 110,928.20

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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.