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Finding the Fourth Proportional to 172,368.68, 258,795.12 and 88,189.20

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Solution

The fourth proportional to 172,368.68, 258,795.12 and 88,189.20 is: 132,407.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,368.68 : 258,795.12 = 88,189.20 : x
  2. Step 2: Convert to fraction form
    172,368.68/258,795.12 = 88,189.20/x
  3. Step 3: Cross multiply
    172,368.68x = 258,795.12 × 88,189.20
  4. Step 4: Simplify right side
    172,368.68x = 22,822,934,596.70
  5. Step 5: Solve for x
    x = 22,822,934,596.70/172,368.68
  6. Step 6: Final answer
    x = 132,407.67

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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.