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Finding the Fourth Proportional to 177,780.90, 266,671.62 and 72,599.88

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Solution

The fourth proportional to 177,780.90, 266,671.62 and 72,599.88 is: 108,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,780.90 : 266,671.62 = 72,599.88 : x
  2. Step 2: Convert to fraction form
    177,780.90/266,671.62 = 72,599.88/x
  3. Step 3: Cross multiply
    177,780.90x = 266,671.62 × 72,599.88
  4. Step 4: Simplify right side
    177,780.90x = 19,360,327,611.41
  5. Step 5: Solve for x
    x = 19,360,327,611.41/177,780.90
  6. Step 6: Final answer
    x = 108,899.93

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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.