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Finding the Fourth Proportional to 136,168.56, 187,780.68 and 90,848.39

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Solution

The fourth proportional to 136,168.56, 187,780.68 and 90,848.39 is: 125,282.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,168.56 : 187,780.68 = 90,848.39 : x
  2. Step 2: Convert to fraction form
    136,168.56/187,780.68 = 90,848.39/x
  3. Step 3: Cross multiply
    136,168.56x = 187,780.68 × 90,848.39
  4. Step 4: Simplify right side
    136,168.56x = 17,059,571,512.20
  5. Step 5: Solve for x
    x = 17,059,571,512.20/136,168.56
  6. Step 6: Final answer
    x = 125,282.75

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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.