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Finding the Fourth Proportional to 161,243.40, 222,453.84 and 103,878.39

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Solution

The fourth proportional to 161,243.40, 222,453.84 and 103,878.39 is: 143,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,243.40 : 222,453.84 = 103,878.39 : x
  2. Step 2: Convert to fraction form
    161,243.40/222,453.84 = 103,878.39/x
  3. Step 3: Cross multiply
    161,243.40x = 222,453.84 × 103,878.39
  4. Step 4: Simplify right side
    161,243.40x = 23,108,146,748.52
  5. Step 5: Solve for x
    x = 23,108,146,748.52/161,243.40
  6. Step 6: Final answer
    x = 143,312.20

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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.