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Finding the Fourth Proportional to 161,243.65, 222,454.20 and 103,878.64

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Solution

The fourth proportional to 161,243.65, 222,454.20 and 103,878.64 is: 143,312.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,243.65 : 222,454.20 = 103,878.64 : x
  2. Step 2: Convert to fraction form
    161,243.65/222,454.20 = 103,878.64/x
  3. Step 3: Cross multiply
    161,243.65x = 222,454.20 × 103,878.64
  4. Step 4: Simplify right side
    161,243.65x = 23,108,239,758.29
  5. Step 5: Solve for x
    x = 23,108,239,758.29/161,243.65
  6. Step 6: Final answer
    x = 143,312.56

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1.5x scale

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.