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Finding the Fourth Proportional to 129,650, 178,912.52 and 73,058

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Solution

The fourth proportional to 129,650, 178,912.52 and 73,058 is: 100,817.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,650 : 178,912.52 = 73,058 : x
  2. Step 2: Convert to fraction form
    129,650/178,912.52 = 73,058/x
  3. Step 3: Cross multiply
    129,650x = 178,912.52 × 73,058
  4. Step 4: Simplify right side
    129,650x = 13,070,990,886.16
  5. Step 5: Solve for x
    x = 13,070,990,886.16/129,650
  6. Step 6: Final answer
    x = 100,817.52

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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.