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Finding the Fourth Proportional to 122,425.62, 168,948.07 and 67,978.55

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Solution

The fourth proportional to 122,425.62, 168,948.07 and 67,978.55 is: 93,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,425.62 : 168,948.07 = 67,978.55 : x
  2. Step 2: Convert to fraction form
    122,425.62/168,948.07 = 67,978.55/x
  3. Step 3: Cross multiply
    122,425.62x = 168,948.07 × 67,978.55
  4. Step 4: Simplify right side
    122,425.62x = 11,484,845,076.32
  5. Step 5: Solve for x
    x = 11,484,845,076.32/122,425.62
  6. Step 6: Final answer
    x = 93,810.80

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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.