Home / 126,983.79-175,243.32-72,540.72

Finding the Fourth Proportional to 126,983.79, 175,243.32 and 72,540.72

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Solution

The fourth proportional to 126,983.79, 175,243.32 and 72,540.72 is: 100,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,983.79 : 175,243.32 = 72,540.72 : x
  2. Step 2: Convert to fraction form
    126,983.79/175,243.32 = 72,540.72/x
  3. Step 3: Cross multiply
    126,983.79x = 175,243.32 × 72,540.72
  4. Step 4: Simplify right side
    126,983.79x = 12,712,276,607.99
  5. Step 5: Solve for x
    x = 12,712,276,607.99/126,983.79
  6. Step 6: Final answer
    x = 100,109.44

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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.