Home / 138,033.64-190,470.18-81,444.52

Finding the Fourth Proportional to 138,033.64, 190,470.18 and 81,444.52

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Solution

The fourth proportional to 138,033.64, 190,470.18 and 81,444.52 is: 112,383.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,033.64 : 190,470.18 = 81,444.52 : x
  2. Step 2: Convert to fraction form
    138,033.64/190,470.18 = 81,444.52/x
  3. Step 3: Cross multiply
    138,033.64x = 190,470.18 × 81,444.52
  4. Step 4: Simplify right side
    138,033.64x = 15,512,752,384.41
  5. Step 5: Solve for x
    x = 15,512,752,384.41/138,033.64
  6. Step 6: Final answer
    x = 112,383.85

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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.