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Finding the Fourth Proportional to 158,054.01, 218,116.25 and 86,432.49

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Solution

The fourth proportional to 158,054.01, 218,116.25 and 86,432.49 is: 119,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,054.01 : 218,116.25 = 86,432.49 : x
  2. Step 2: Convert to fraction form
    158,054.01/218,116.25 = 86,432.49/x
  3. Step 3: Cross multiply
    158,054.01x = 218,116.25 × 86,432.49
  4. Step 4: Simplify right side
    158,054.01x = 18,852,330,488.92
  5. Step 5: Solve for x
    x = 18,852,330,488.92/158,054.01
  6. Step 6: Final answer
    x = 119,277.78

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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.