Home / 123,029.33-169,780.47-66,440.70

Finding the Fourth Proportional to 123,029.33, 169,780.47 and 66,440.70

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Solution

The fourth proportional to 123,029.33, 169,780.47 and 66,440.70 is: 91,688.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,029.33 : 169,780.47 = 66,440.70 : x
  2. Step 2: Convert to fraction form
    123,029.33/169,780.47 = 66,440.70/x
  3. Step 3: Cross multiply
    123,029.33x = 169,780.47 × 66,440.70
  4. Step 4: Simplify right side
    123,029.33x = 11,280,333,273.13
  5. Step 5: Solve for x
    x = 11,280,333,273.13/123,029.33
  6. Step 6: Final answer
    x = 91,688.17

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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.