Home / 103,718.18-143,132.91-61,276.61

Finding the Fourth Proportional to 103,718.18, 143,132.91 and 61,276.61

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Solution

The fourth proportional to 103,718.18, 143,132.91 and 61,276.61 is: 84,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,718.18 : 143,132.91 = 61,276.61 : x
  2. Step 2: Convert to fraction form
    103,718.18/143,132.91 = 61,276.61/x
  3. Step 3: Cross multiply
    103,718.18x = 143,132.91 × 61,276.61
  4. Step 4: Simplify right side
    103,718.18x = 8,770,699,504.24
  5. Step 5: Solve for x
    x = 8,770,699,504.24/103,718.18
  6. Step 6: Final answer
    x = 84,562.80

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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.