Home / 103,719.18-143,134.29-61,277.61

Finding the Fourth Proportional to 103,719.18, 143,134.29 and 61,277.61

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Solution

The fourth proportional to 103,719.18, 143,134.29 and 61,277.61 is: 84,564.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,719.18 : 143,134.29 = 61,277.61 : x
  2. Step 2: Convert to fraction form
    103,719.18/143,134.29 = 61,277.61/x
  3. Step 3: Cross multiply
    103,719.18x = 143,134.29 × 61,277.61
  4. Step 4: Simplify right side
    103,719.18x = 8,770,927,200.25
  5. Step 5: Solve for x
    x = 8,770,927,200.25/103,719.18
  6. Step 6: Final answer
    x = 84,564.18

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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.