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Finding the Fourth Proportional to 162,315.80, 243,036.30 and 127,323.80

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Solution

The fourth proportional to 162,315.80, 243,036.30 and 127,323.80 is: 190,642.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,315.80 : 243,036.30 = 127,323.80 : x
  2. Step 2: Convert to fraction form
    162,315.80/243,036.30 = 127,323.80/x
  3. Step 3: Cross multiply
    162,315.80x = 243,036.30 × 127,323.80
  4. Step 4: Simplify right side
    162,315.80x = 30,944,305,253.94
  5. Step 5: Solve for x
    x = 30,944,305,253.94/162,315.80
  6. Step 6: Final answer
    x = 190,642.59

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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.