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Finding the Fourth Proportional to 145,843.20, 218,764.80 and 123,973.20

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Solution

The fourth proportional to 145,843.20, 218,764.80 and 123,973.20 is: 185,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,843.20 : 218,764.80 = 123,973.20 : x
  2. Step 2: Convert to fraction form
    145,843.20/218,764.80 = 123,973.20/x
  3. Step 3: Cross multiply
    145,843.20x = 218,764.80 × 123,973.20
  4. Step 4: Simplify right side
    145,843.20x = 27,120,972,303.36
  5. Step 5: Solve for x
    x = 27,120,972,303.36/145,843.20
  6. Step 6: Final answer
    x = 185,959.80

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1.5x scale

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.