Home / 108,824.80-163,064.40-80,831.20

Finding the Fourth Proportional to 108,824.80, 163,064.40 and 80,831.20

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Solution

The fourth proportional to 108,824.80, 163,064.40 and 80,831.20 is: 121,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,824.80 : 163,064.40 = 80,831.20 : x
  2. Step 2: Convert to fraction form
    108,824.80/163,064.40 = 80,831.20/x
  3. Step 3: Cross multiply
    108,824.80x = 163,064.40 × 80,831.20
  4. Step 4: Simplify right side
    108,824.80x = 13,180,691,129.28
  5. Step 5: Solve for x
    x = 13,180,691,129.28/108,824.80
  6. Step 6: Final answer
    x = 121,118.45

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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.