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Finding the Fourth Proportional to 161,139.48, 241,791.12 and 72,374.88

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Solution

The fourth proportional to 161,139.48, 241,791.12 and 72,374.88 is: 108,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,139.48 : 241,791.12 = 72,374.88 : x
  2. Step 2: Convert to fraction form
    161,139.48/241,791.12 = 72,374.88/x
  3. Step 3: Cross multiply
    161,139.48x = 241,791.12 × 72,374.88
  4. Step 4: Simplify right side
    161,139.48x = 17,499,603,295.07
  5. Step 5: Solve for x
    x = 17,499,603,295.07/161,139.48
  6. Step 6: Final answer
    x = 108,599.10

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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.