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Finding the Fourth Proportional to 105,611.61, 145,738.44 and 60,287.79

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Solution

The fourth proportional to 105,611.61, 145,738.44 and 60,287.79 is: 83,193.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,611.61 : 145,738.44 = 60,287.79 : x
  2. Step 2: Convert to fraction form
    105,611.61/145,738.44 = 60,287.79/x
  3. Step 3: Cross multiply
    105,611.61x = 145,738.44 × 60,287.79
  4. Step 4: Simplify right side
    105,611.61x = 8,786,248,465.65
  5. Step 5: Solve for x
    x = 8,786,248,465.65/105,611.61
  6. Step 6: Final answer
    x = 83,193.96

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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.