Home / 122,780.25-169,424.64-69,064.11

Finding the Fourth Proportional to 122,780.25, 169,424.64 and 69,064.11

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Solution

The fourth proportional to 122,780.25, 169,424.64 and 69,064.11 is: 95,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,780.25 : 169,424.64 = 69,064.11 : x
  2. Step 2: Convert to fraction form
    122,780.25/169,424.64 = 69,064.11/x
  3. Step 3: Cross multiply
    122,780.25x = 169,424.64 × 69,064.11
  4. Step 4: Simplify right side
    122,780.25x = 11,701,161,973.67
  5. Step 5: Solve for x
    x = 11,701,161,973.67/122,780.25
  6. Step 6: Final answer
    x = 95,301.66

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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.