Home / 122,780.70-169,435.67-69,065.69

Finding the Fourth Proportional to 122,780.70, 169,435.67 and 69,065.69

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Solution

The fourth proportional to 122,780.70, 169,435.67 and 69,065.69 is: 95,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,780.70 : 169,435.67 = 69,065.69 : x
  2. Step 2: Convert to fraction form
    122,780.70/169,435.67 = 69,065.69/x
  3. Step 3: Cross multiply
    122,780.70x = 169,435.67 × 69,065.69
  4. Step 4: Simplify right side
    122,780.70x = 11,702,190,266.66
  5. Step 5: Solve for x
    x = 11,702,190,266.66/122,780.70
  6. Step 6: Final answer
    x = 95,309.69

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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.