Home / 131,514.18-197,320.93-78,960.30

Finding the Fourth Proportional to 131,514.18, 197,320.93 and 78,960.30

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Solution

The fourth proportional to 131,514.18, 197,320.93 and 78,960.30 is: 118,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,514.18 : 197,320.93 = 78,960.30 : x
  2. Step 2: Convert to fraction form
    131,514.18/197,320.93 = 78,960.30/x
  3. Step 3: Cross multiply
    131,514.18x = 197,320.93 × 78,960.30
  4. Step 4: Simplify right side
    131,514.18x = 15,580,519,829.08
  5. Step 5: Solve for x
    x = 15,580,519,829.08/131,514.18
  6. Step 6: Final answer
    x = 118,470.27

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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.