Home / 105,122.18-145,115.26-71,179.94

Finding the Fourth Proportional to 105,122.18, 145,115.26 and 71,179.94

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Solution

The fourth proportional to 105,122.18, 145,115.26 and 71,179.94 is: 98,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,122.18 : 145,115.26 = 71,179.94 : x
  2. Step 2: Convert to fraction form
    105,122.18/145,115.26 = 71,179.94/x
  3. Step 3: Cross multiply
    105,122.18x = 145,115.26 × 71,179.94
  4. Step 4: Simplify right side
    105,122.18x = 10,329,294,596.36
  5. Step 5: Solve for x
    x = 10,329,294,596.36/105,122.18
  6. Step 6: Final answer
    x = 98,259.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.