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Finding the Fourth Proportional to 161,329.40, 241,878.90 and 91,230.20

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Solution

The fourth proportional to 161,329.40, 241,878.90 and 91,230.20 is: 136,780.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,329.40 : 241,878.90 = 91,230.20 : x
  2. Step 2: Convert to fraction form
    161,329.40/241,878.90 = 91,230.20/x
  3. Step 3: Cross multiply
    161,329.40x = 241,878.90 × 91,230.20
  4. Step 4: Simplify right side
    161,329.40x = 22,066,660,422.78
  5. Step 5: Solve for x
    x = 22,066,660,422.78/161,329.40
  6. Step 6: Final answer
    x = 136,780.16

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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.