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Finding the Fourth Proportional to 177,731.60, 266,500.20 and 72,431.60

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Solution

The fourth proportional to 177,731.60, 266,500.20 and 72,431.60 is: 108,607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,731.60 : 266,500.20 = 72,431.60 : x
  2. Step 2: Convert to fraction form
    177,731.60/266,500.20 = 72,431.60/x
  3. Step 3: Cross multiply
    177,731.60x = 266,500.20 × 72,431.60
  4. Step 4: Simplify right side
    177,731.60x = 19,303,035,886.32
  5. Step 5: Solve for x
    x = 19,303,035,886.32/177,731.60
  6. Step 6: Final answer
    x = 108,607.79

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1.5x scale

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.