Home / 140,172.13-193,416.62-78,909.48

Finding the Fourth Proportional to 140,172.13, 193,416.62 and 78,909.48

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Solution

The fourth proportional to 140,172.13, 193,416.62 and 78,909.48 is: 108,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,172.13 : 193,416.62 = 78,909.48 : x
  2. Step 2: Convert to fraction form
    140,172.13/193,416.62 = 78,909.48/x
  3. Step 3: Cross multiply
    140,172.13x = 193,416.62 × 78,909.48
  4. Step 4: Simplify right side
    140,172.13x = 15,262,404,907.56
  5. Step 5: Solve for x
    x = 15,262,404,907.56/140,172.13
  6. Step 6: Final answer
    x = 108,883.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.