Home / 126,987.80-175,230.78-70,397.96

Finding the Fourth Proportional to 126,987.80, 175,230.78 and 70,397.96

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Solution

The fourth proportional to 126,987.80, 175,230.78 and 70,397.96 is: 97,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,987.80 : 175,230.78 = 70,397.96 : x
  2. Step 2: Convert to fraction form
    126,987.80/175,230.78 = 70,397.96/x
  3. Step 3: Cross multiply
    126,987.80x = 175,230.78 × 70,397.96
  4. Step 4: Simplify right side
    126,987.80x = 12,335,889,441.21
  5. Step 5: Solve for x
    x = 12,335,889,441.21/126,987.80
  6. Step 6: Final answer
    x = 97,142.32

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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.