Home / 100,957.20-151,430.32-30,831.04

Finding the Fourth Proportional to 100,957.20, 151,430.32 and 30,831.04

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Solution

The fourth proportional to 100,957.20, 151,430.32 and 30,831.04 is: 46,244.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,957.20 : 151,430.32 = 30,831.04 : x
  2. Step 2: Convert to fraction form
    100,957.20/151,430.32 = 30,831.04/x
  3. Step 3: Cross multiply
    100,957.20x = 151,430.32 × 30,831.04
  4. Step 4: Simplify right side
    100,957.20x = 4,668,754,253.13
  5. Step 5: Solve for x
    x = 4,668,754,253.13/100,957.20
  6. Step 6: Final answer
    x = 46,244.89

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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.