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Finding the Fourth Proportional to 162,927.70, 244,282.20 and 78,728.20

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Solution

The fourth proportional to 162,927.70, 244,282.20 and 78,728.20 is: 118,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,927.70 : 244,282.20 = 78,728.20 : x
  2. Step 2: Convert to fraction form
    162,927.70/244,282.20 = 78,728.20/x
  3. Step 3: Cross multiply
    162,927.70x = 244,282.20 × 78,728.20
  4. Step 4: Simplify right side
    162,927.70x = 19,231,897,898.04
  5. Step 5: Solve for x
    x = 19,231,897,898.04/162,927.70
  6. Step 6: Final answer
    x = 118,039.46

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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.