Home / 90,831.60-136,247.40-89,519.40

Finding the Fourth Proportional to 90,831.60, 136,247.40 and 89,519.40

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Solution

The fourth proportional to 90,831.60, 136,247.40 and 89,519.40 is: 134,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.60 : 136,247.40 = 89,519.40 : x
  2. Step 2: Convert to fraction form
    90,831.60/136,247.40 = 89,519.40/x
  3. Step 3: Cross multiply
    90,831.60x = 136,247.40 × 89,519.40
  4. Step 4: Simplify right side
    90,831.60x = 12,196,785,499.56
  5. Step 5: Solve for x
    x = 12,196,785,499.56/90,831.60
  6. Step 6: Final answer
    x = 134,279.10

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1.5x scale

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.