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Finding the Fourth Proportional to 147,991.80, 222,060.60 and 84,860.40

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Solution

The fourth proportional to 147,991.80, 222,060.60 and 84,860.40 is: 127,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,991.80 : 222,060.60 = 84,860.40 : x
  2. Step 2: Convert to fraction form
    147,991.80/222,060.60 = 84,860.40/x
  3. Step 3: Cross multiply
    147,991.80x = 222,060.60 × 84,860.40
  4. Step 4: Simplify right side
    147,991.80x = 18,844,151,340.24
  5. Step 5: Solve for x
    x = 18,844,151,340.24/147,991.80
  6. Step 6: Final answer
    x = 127,332.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.