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Finding the Fourth Proportional to 158,474.77, 218,696.90 and 86,853.22

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Solution

The fourth proportional to 158,474.77, 218,696.90 and 86,853.22 is: 119,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,474.77 : 218,696.90 = 86,853.22 : x
  2. Step 2: Convert to fraction form
    158,474.77/218,696.90 = 86,853.22/x
  3. Step 3: Cross multiply
    158,474.77x = 218,696.90 × 86,853.22
  4. Step 4: Simplify right side
    158,474.77x = 18,994,528,988.01
  5. Step 5: Solve for x
    x = 18,994,528,988.01/158,474.77
  6. Step 6: Final answer
    x = 119,858.38

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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.