Home / 126,985.59-175,176.68-81,066.69

Finding the Fourth Proportional to 126,985.59, 175,176.68 and 81,066.69

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Solution

The fourth proportional to 126,985.59, 175,176.68 and 81,066.69 is: 111,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,985.59 : 175,176.68 = 81,066.69 : x
  2. Step 2: Convert to fraction form
    126,985.59/175,176.68 = 81,066.69/x
  3. Step 3: Cross multiply
    126,985.59x = 175,176.68 × 81,066.69
  4. Step 4: Simplify right side
    126,985.59x = 14,200,993,207.46
  5. Step 5: Solve for x
    x = 14,200,993,207.46/126,985.59
  6. Step 6: Final answer
    x = 111,831.53

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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.