Home / 126,839.47-175,039.76-76,528.75

Finding the Fourth Proportional to 126,839.47, 175,039.76 and 76,528.75

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Solution

The fourth proportional to 126,839.47, 175,039.76 and 76,528.75 is: 105,610.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,839.47 : 175,039.76 = 76,528.75 : x
  2. Step 2: Convert to fraction form
    126,839.47/175,039.76 = 76,528.75/x
  3. Step 3: Cross multiply
    126,839.47x = 175,039.76 × 76,528.75
  4. Step 4: Simplify right side
    126,839.47x = 13,395,574,033.10
  5. Step 5: Solve for x
    x = 13,395,574,033.10/126,839.47
  6. Step 6: Final answer
    x = 105,610.45

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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.