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Finding the Fourth Proportional to 112,920, 169,445.62 and 50,590.50

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Solution

The fourth proportional to 112,920, 169,445.62 and 50,590.50 is: 75,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,920 : 169,445.62 = 50,590.50 : x
  2. Step 2: Convert to fraction form
    112,920/169,445.62 = 50,590.50/x
  3. Step 3: Cross multiply
    112,920x = 169,445.62 × 50,590.50
  4. Step 4: Simplify right side
    112,920x = 8,572,338,638.61
  5. Step 5: Solve for x
    x = 8,572,338,638.61/112,920
  6. Step 6: Final answer
    x = 75,915.15

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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.