Home / 84,635.10-126,985.05-83,306.70

Finding the Fourth Proportional to 84,635.10, 126,985.05 and 83,306.70

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Solution

The fourth proportional to 84,635.10, 126,985.05 and 83,306.70 is: 124,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,635.10 : 126,985.05 = 83,306.70 : x
  2. Step 2: Convert to fraction form
    84,635.10/126,985.05 = 83,306.70/x
  3. Step 3: Cross multiply
    84,635.10x = 126,985.05 × 83,306.70
  4. Step 4: Simplify right side
    84,635.10x = 10,578,705,464.84
  5. Step 5: Solve for x
    x = 10,578,705,464.84/84,635.10
  6. Step 6: Final answer
    x = 124,991.94

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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.