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Finding the Fourth Proportional to 177,617.40, 266,199.30 and 72,317.40

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Solution

The fourth proportional to 177,617.40, 266,199.30 and 72,317.40 is: 108,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,617.40 : 266,199.30 = 72,317.40 : x
  2. Step 2: Convert to fraction form
    177,617.40/266,199.30 = 72,317.40/x
  3. Step 3: Cross multiply
    177,617.40x = 266,199.30 × 72,317.40
  4. Step 4: Simplify right side
    177,617.40x = 19,250,841,257.82
  5. Step 5: Solve for x
    x = 19,250,841,257.82/177,617.40
  6. Step 6: Final answer
    x = 108,383.76

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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.