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Finding the Fourth Proportional to 122,357.78, 168,853.33 and 67,918.17

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Solution

The fourth proportional to 122,357.78, 168,853.33 and 67,918.17 is: 93,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,357.78 : 168,853.33 = 67,918.17 : x
  2. Step 2: Convert to fraction form
    122,357.78/168,853.33 = 67,918.17/x
  3. Step 3: Cross multiply
    122,357.78x = 168,853.33 × 67,918.17
  4. Step 4: Simplify right side
    122,357.78x = 11,468,209,172.01
  5. Step 5: Solve for x
    x = 11,468,209,172.01/122,357.78
  6. Step 6: Final answer
    x = 93,726.85

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1.5x scale

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.