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Finding the Fourth Proportional to 158,902.60, 219,292.48 and 90,940.90

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Solution

The fourth proportional to 158,902.60, 219,292.48 and 90,940.90 is: 125,502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,902.60 : 219,292.48 = 90,940.90 : x
  2. Step 2: Convert to fraction form
    158,902.60/219,292.48 = 90,940.90/x
  3. Step 3: Cross multiply
    158,902.60x = 219,292.48 × 90,940.90
  4. Step 4: Simplify right side
    158,902.60x = 19,942,655,494.43
  5. Step 5: Solve for x
    x = 19,942,655,494.43/158,902.60
  6. Step 6: Final answer
    x = 125,502.39

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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.