Home / 138,020.04-190,470.66-84,334.66

Finding the Fourth Proportional to 138,020.04, 190,470.66 and 84,334.66

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Solution

The fourth proportional to 138,020.04, 190,470.66 and 84,334.66 is: 116,383.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,020.04 : 190,470.66 = 84,334.66 : x
  2. Step 2: Convert to fraction form
    138,020.04/190,470.66 = 84,334.66/x
  3. Step 3: Cross multiply
    138,020.04x = 190,470.66 × 84,334.66
  4. Step 4: Simplify right side
    138,020.04x = 16,063,277,874.90
  5. Step 5: Solve for x
    x = 16,063,277,874.90/138,020.04
  6. Step 6: Final answer
    x = 116,383.66

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1.5x scale

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.