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Finding the Fourth Proportional to 158,042.46, 218,098.80 and 90,056.46

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Solution

The fourth proportional to 158,042.46, 218,098.80 and 90,056.46 is: 124,278.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,042.46 : 218,098.80 = 90,056.46 : x
  2. Step 2: Convert to fraction form
    158,042.46/218,098.80 = 90,056.46/x
  3. Step 3: Cross multiply
    158,042.46x = 218,098.80 × 90,056.46
  4. Step 4: Simplify right side
    158,042.46x = 19,641,205,858.25
  5. Step 5: Solve for x
    x = 19,641,205,858.25/158,042.46
  6. Step 6: Final answer
    x = 124,278.03

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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.