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Finding the Fourth Proportional to 158,614.94, 218,894.20 and 86,995.25

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Solution

The fourth proportional to 158,614.94, 218,894.20 and 86,995.25 is: 120,056.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,614.94 : 218,894.20 = 86,995.25 : x
  2. Step 2: Convert to fraction form
    158,614.94/218,894.20 = 86,995.25/x
  3. Step 3: Cross multiply
    158,614.94x = 218,894.20 × 86,995.25
  4. Step 4: Simplify right side
    158,614.94x = 19,042,755,161.44
  5. Step 5: Solve for x
    x = 19,042,755,161.44/158,614.94
  6. Step 6: Final answer
    x = 120,056.50

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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.