Home / 109,220.40-150,731.28-61,469.28

Finding the Fourth Proportional to 109,220.40, 150,731.28 and 61,469.28

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Solution

The fourth proportional to 109,220.40, 150,731.28 and 61,469.28 is: 84,831.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,220.40 : 150,731.28 = 61,469.28 : x
  2. Step 2: Convert to fraction form
    109,220.40/150,731.28 = 61,469.28/x
  3. Step 3: Cross multiply
    109,220.40x = 150,731.28 × 61,469.28
  4. Step 4: Simplify right side
    109,220.40x = 9,265,343,255.08
  5. Step 5: Solve for x
    x = 9,265,343,255.08/109,220.40
  6. Step 6: Final answer
    x = 84,831.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.