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Finding the Fourth Proportional to 79,603.20, 119,275.20 and 67,939.20

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Solution

The fourth proportional to 79,603.20, 119,275.20 and 67,939.20 is: 101,798.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,603.20 : 119,275.20 = 67,939.20 : x
  2. Step 2: Convert to fraction form
    79,603.20/119,275.20 = 67,939.20/x
  3. Step 3: Cross multiply
    79,603.20x = 119,275.20 × 67,939.20
  4. Step 4: Simplify right side
    79,603.20x = 8,103,461,667.84
  5. Step 5: Solve for x
    x = 8,103,461,667.84/79,603.20
  6. Step 6: Final answer
    x = 101,798.19

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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.