Home / 113,257.20-169,866-43,140.72

Finding the Fourth Proportional to 113,257.20, 169,866 and 43,140.72

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Solution

The fourth proportional to 113,257.20, 169,866 and 43,140.72 is: 64,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,257.20 : 169,866 = 43,140.72 : x
  2. Step 2: Convert to fraction form
    113,257.20/169,866 = 43,140.72/x
  3. Step 3: Cross multiply
    113,257.20x = 169,866 × 43,140.72
  4. Step 4: Simplify right side
    113,257.20x = 7,328,141,543.52
  5. Step 5: Solve for x
    x = 7,328,141,543.52/113,257.20
  6. Step 6: Final answer
    x = 64,703.54

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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.