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Finding the Fourth Proportional to 84,558.60, 126,870.30 and 83,230.20

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Solution

The fourth proportional to 84,558.60, 126,870.30 and 83,230.20 is: 124,877.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,558.60 : 126,870.30 = 83,230.20 : x
  2. Step 2: Convert to fraction form
    84,558.60/126,870.30 = 83,230.20/x
  3. Step 3: Cross multiply
    84,558.60x = 126,870.30 × 83,230.20
  4. Step 4: Simplify right side
    84,558.60x = 10,559,440,443.06
  5. Step 5: Solve for x
    x = 10,559,440,443.06/84,558.60
  6. Step 6: Final answer
    x = 124,877.19

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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.