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Finding the Fourth Proportional to 158,022.36, 218,062.80 and 86,388.48

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Solution

The fourth proportional to 158,022.36, 218,062.80 and 86,388.48 is: 119,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,022.36 : 218,062.80 = 86,388.48 : x
  2. Step 2: Convert to fraction form
    158,022.36/218,062.80 = 86,388.48/x
  3. Step 3: Cross multiply
    158,022.36x = 218,062.80 × 86,388.48
  4. Step 4: Simplify right side
    158,022.36x = 18,838,113,836.54
  5. Step 5: Solve for x
    x = 18,838,113,836.54/158,022.36
  6. Step 6: Final answer
    x = 119,211.70

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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.