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Finding the Fourth Proportional to 162,402.48, 243,623.52 and 68,876.64

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Solution

The fourth proportional to 162,402.48, 243,623.52 and 68,876.64 is: 103,323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,402.48 : 243,623.52 = 68,876.64 : x
  2. Step 2: Convert to fraction form
    162,402.48/243,623.52 = 68,876.64/x
  3. Step 3: Cross multiply
    162,402.48x = 243,623.52 × 68,876.64
  4. Step 4: Simplify right side
    162,402.48x = 16,779,969,482.57
  5. Step 5: Solve for x
    x = 16,779,969,482.57/162,402.48
  6. Step 6: Final answer
    x = 103,323.36

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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.