Home / 88,719.40-133,079.10-80,554.60

Finding the Fourth Proportional to 88,719.40, 133,079.10 and 80,554.60

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Solution

The fourth proportional to 88,719.40, 133,079.10 and 80,554.60 is: 120,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,719.40 : 133,079.10 = 80,554.60 : x
  2. Step 2: Convert to fraction form
    88,719.40/133,079.10 = 80,554.60/x
  3. Step 3: Cross multiply
    88,719.40x = 133,079.10 × 80,554.60
  4. Step 4: Simplify right side
    88,719.40x = 10,720,133,668.86
  5. Step 5: Solve for x
    x = 10,720,133,668.86/88,719.40
  6. Step 6: Final answer
    x = 120,831.90

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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.