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Finding the Fourth Proportional to 177,990.62, 266,985.32 and 72,809.58

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Solution

The fourth proportional to 177,990.62, 266,985.32 and 72,809.58 is: 109,214.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,990.62 : 266,985.32 = 72,809.58 : x
  2. Step 2: Convert to fraction form
    177,990.62/266,985.32 = 72,809.58/x
  3. Step 3: Cross multiply
    177,990.62x = 266,985.32 × 72,809.58
  4. Step 4: Simplify right side
    177,990.62x = 19,439,089,652.51
  5. Step 5: Solve for x
    x = 19,439,089,652.51/177,990.62
  6. Step 6: Final answer
    x = 109,214.13

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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.