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Finding the Fourth Proportional to 155,023.68, 213,997.68 and 104,790.72

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Solution

The fourth proportional to 155,023.68, 213,997.68 and 104,790.72 is: 144,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,023.68 : 213,997.68 = 104,790.72 : x
  2. Step 2: Convert to fraction form
    155,023.68/213,997.68 = 104,790.72/x
  3. Step 3: Cross multiply
    155,023.68x = 213,997.68 × 104,790.72
  4. Step 4: Simplify right side
    155,023.68x = 22,424,970,965.53
  5. Step 5: Solve for x
    x = 22,424,970,965.53/155,023.68
  6. Step 6: Final answer
    x = 144,655.13

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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.