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Finding the Fourth Proportional to 84,378.60, 126,600.30 and 83,050.20

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Solution

The fourth proportional to 84,378.60, 126,600.30 and 83,050.20 is: 124,607.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,378.60 : 126,600.30 = 83,050.20 : x
  2. Step 2: Convert to fraction form
    84,378.60/126,600.30 = 83,050.20/x
  3. Step 3: Cross multiply
    84,378.60x = 126,600.30 × 83,050.20
  4. Step 4: Simplify right side
    84,378.60x = 10,514,180,235.06
  5. Step 5: Solve for x
    x = 10,514,180,235.06/84,378.60
  6. Step 6: Final answer
    x = 124,607.19

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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.