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Finding the Fourth Proportional to 162,912.60, 244,368.90 and 138,308.85

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Solution

The fourth proportional to 162,912.60, 244,368.90 and 138,308.85 is: 207,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,912.60 : 244,368.90 = 138,308.85 : x
  2. Step 2: Convert to fraction form
    162,912.60/244,368.90 = 138,308.85/x
  3. Step 3: Cross multiply
    162,912.60x = 244,368.90 × 138,308.85
  4. Step 4: Simplify right side
    162,912.60x = 33,798,381,534.77
  5. Step 5: Solve for x
    x = 33,798,381,534.77/162,912.60
  6. Step 6: Final answer
    x = 207,463.28

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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.