Home / 115,487.90-173,231.85-103,678.10

Finding the Fourth Proportional to 115,487.90, 173,231.85 and 103,678.10

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Solution

The fourth proportional to 115,487.90, 173,231.85 and 103,678.10 is: 155,517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,487.90 : 173,231.85 = 103,678.10 : x
  2. Step 2: Convert to fraction form
    115,487.90/173,231.85 = 103,678.10/x
  3. Step 3: Cross multiply
    115,487.90x = 173,231.85 × 103,678.10
  4. Step 4: Simplify right side
    115,487.90x = 17,960,349,067.49
  5. Step 5: Solve for x
    x = 17,960,349,067.49/115,487.90
  6. Step 6: Final answer
    x = 155,517.15

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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.