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Finding the Fourth Proportional to 84,149.16, 126,314.73 and 74,848.74

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Solution

The fourth proportional to 84,149.16, 126,314.73 and 74,848.74 is: 112,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,149.16 : 126,314.73 = 74,848.74 : x
  2. Step 2: Convert to fraction form
    84,149.16/126,314.73 = 74,848.74/x
  3. Step 3: Cross multiply
    84,149.16x = 126,314.73 × 74,848.74
  4. Step 4: Simplify right side
    84,149.16x = 9,454,498,383.94
  5. Step 5: Solve for x
    x = 9,454,498,383.94/84,149.16
  6. Step 6: Final answer
    x = 112,354.04

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1.5x scale

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.