Home / 124,089.22-171,151.47-78,728.14

Finding the Fourth Proportional to 124,089.22, 171,151.47 and 78,728.14

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Solution

The fourth proportional to 124,089.22, 171,151.47 and 78,728.14 is: 108,586.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,089.22 : 171,151.47 = 78,728.14 : x
  2. Step 2: Convert to fraction form
    124,089.22/171,151.47 = 78,728.14/x
  3. Step 3: Cross multiply
    124,089.22x = 171,151.47 × 78,728.14
  4. Step 4: Simplify right side
    124,089.22x = 13,474,436,891.37
  5. Step 5: Solve for x
    x = 13,474,436,891.37/124,089.22
  6. Step 6: Final answer
    x = 108,586.68

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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.