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Finding the Fourth Proportional to 129,586.88, 178,833.44 and 73,000.32

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Solution

The fourth proportional to 129,586.88, 178,833.44 and 73,000.32 is: 100,742.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,586.88 : 178,833.44 = 73,000.32 : x
  2. Step 2: Convert to fraction form
    129,586.88/178,833.44 = 73,000.32/x
  3. Step 3: Cross multiply
    129,586.88x = 178,833.44 × 73,000.32
  4. Step 4: Simplify right side
    129,586.88x = 13,054,898,346.70
  5. Step 5: Solve for x
    x = 13,054,898,346.70/129,586.88
  6. Step 6: Final answer
    x = 100,742.44

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1.5x scale

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.