Home / 82,602.12-123,903.36-78,395.04

Finding the Fourth Proportional to 82,602.12, 123,903.36 and 78,395.04

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Solution

The fourth proportional to 82,602.12, 123,903.36 and 78,395.04 is: 117,592.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,602.12 : 123,903.36 = 78,395.04 : x
  2. Step 2: Convert to fraction form
    82,602.12/123,903.36 = 78,395.04/x
  3. Step 3: Cross multiply
    82,602.12x = 123,903.36 × 78,395.04
  4. Step 4: Simplify right side
    82,602.12x = 9,713,408,863.33
  5. Step 5: Solve for x
    x = 9,713,408,863.33/82,602.12
  6. Step 6: Final answer
    x = 117,592.73

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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.