Home / 146,831.80-220,247.70-128,752.60

Finding the Fourth Proportional to 146,831.80, 220,247.70 and 128,752.60

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Solution

The fourth proportional to 146,831.80, 220,247.70 and 128,752.60 is: 193,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,831.80 : 220,247.70 = 128,752.60 : x
  2. Step 2: Convert to fraction form
    146,831.80/220,247.70 = 128,752.60/x
  3. Step 3: Cross multiply
    146,831.80x = 220,247.70 × 128,752.60
  4. Step 4: Simplify right side
    146,831.80x = 28,357,464,019.02
  5. Step 5: Solve for x
    x = 28,357,464,019.02/146,831.80
  6. Step 6: Final answer
    x = 193,128.90

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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.