Home / 91,831.60-137,455.80-84,833.20

Finding the Fourth Proportional to 91,831.60, 137,455.80 and 84,833.20

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Solution

The fourth proportional to 91,831.60, 137,455.80 and 84,833.20 is: 126,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,831.60 : 137,455.80 = 84,833.20 : x
  2. Step 2: Convert to fraction form
    91,831.60/137,455.80 = 84,833.20/x
  3. Step 3: Cross multiply
    91,831.60x = 137,455.80 × 84,833.20
  4. Step 4: Simplify right side
    91,831.60x = 11,660,815,372.56
  5. Step 5: Solve for x
    x = 11,660,815,372.56/91,831.60
  6. Step 6: Final answer
    x = 126,980.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.