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Finding the Fourth Proportional to 155,021.68, 213,994.92 and 104,788.72

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Solution

The fourth proportional to 155,021.68, 213,994.92 and 104,788.72 is: 144,652.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,021.68 : 213,994.92 = 104,788.72 : x
  2. Step 2: Convert to fraction form
    155,021.68/213,994.92 = 104,788.72/x
  3. Step 3: Cross multiply
    155,021.68x = 213,994.92 × 104,788.72
  4. Step 4: Simplify right side
    155,021.68x = 22,424,253,753.30
  5. Step 5: Solve for x
    x = 22,424,253,753.30/155,021.68
  6. Step 6: Final answer
    x = 144,652.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.