Home / 91,243.20-125,001.10-87,831.83

Finding the Fourth Proportional to 91,243.20, 125,001.10 and 87,831.83

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Solution

The fourth proportional to 91,243.20, 125,001.10 and 87,831.83 is: 120,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,243.20 : 125,001.10 = 87,831.83 : x
  2. Step 2: Convert to fraction form
    91,243.20/125,001.10 = 87,831.83/x
  3. Step 3: Cross multiply
    91,243.20x = 125,001.10 × 87,831.83
  4. Step 4: Simplify right side
    91,243.20x = 10,979,074,955.41
  5. Step 5: Solve for x
    x = 10,979,074,955.41/91,243.20
  6. Step 6: Final answer
    x = 120,327.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.