Home / 115,269.28-172,909.20-43,239.40

Finding the Fourth Proportional to 115,269.28, 172,909.20 and 43,239.40

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Solution

The fourth proportional to 115,269.28, 172,909.20 and 43,239.40 is: 64,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,269.28 : 172,909.20 = 43,239.40 : x
  2. Step 2: Convert to fraction form
    115,269.28/172,909.20 = 43,239.40/x
  3. Step 3: Cross multiply
    115,269.28x = 172,909.20 × 43,239.40
  4. Step 4: Simplify right side
    115,269.28x = 7,476,489,792.35
  5. Step 5: Solve for x
    x = 7,476,489,792.35/115,269.28
  6. Step 6: Final answer
    x = 64,861.08

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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.