Home / 82,440.60-123,515.10-69,901.80

Finding the Fourth Proportional to 82,440.60, 123,515.10 and 69,901.80

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Solution

The fourth proportional to 82,440.60, 123,515.10 and 69,901.80 is: 104,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,440.60 : 123,515.10 = 69,901.80 : x
  2. Step 2: Convert to fraction form
    82,440.60/123,515.10 = 69,901.80/x
  3. Step 3: Cross multiply
    82,440.60x = 123,515.10 × 69,901.80
  4. Step 4: Simplify right side
    82,440.60x = 8,633,927,817.18
  5. Step 5: Solve for x
    x = 8,633,927,817.18/82,440.60
  6. Step 6: Final answer
    x = 104,729.08

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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.