Home / 126,972.09-175,209.71-70,378.65

Finding the Fourth Proportional to 126,972.09, 175,209.71 and 70,378.65

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Solution

The fourth proportional to 126,972.09, 175,209.71 and 70,378.65 is: 97,116.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,972.09 : 175,209.71 = 70,378.65 : x
  2. Step 2: Convert to fraction form
    126,972.09/175,209.71 = 70,378.65/x
  3. Step 3: Cross multiply
    126,972.09x = 175,209.71 × 70,378.65
  4. Step 4: Simplify right side
    126,972.09x = 12,331,022,504.80
  5. Step 5: Solve for x
    x = 12,331,022,504.80/126,972.09
  6. Step 6: Final answer
    x = 97,116.01

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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.