Home / 157,543.90-236,469.45-78,747.10

Finding the Fourth Proportional to 157,543.90, 236,469.45 and 78,747.10

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Solution

The fourth proportional to 157,543.90, 236,469.45 and 78,747.10 is: 118,197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,543.90 : 236,469.45 = 78,747.10 : x
  2. Step 2: Convert to fraction form
    157,543.90/236,469.45 = 78,747.10/x
  3. Step 3: Cross multiply
    157,543.90x = 236,469.45 × 78,747.10
  4. Step 4: Simplify right side
    157,543.90x = 18,621,283,426.10
  5. Step 5: Solve for x
    x = 18,621,283,426.10/157,543.90
  6. Step 6: Final answer
    x = 118,197.43

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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.