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Finding the Fourth Proportional to 115,589.40, 161,617.80 and 115,589.40

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Solution

The fourth proportional to 115,589.40, 161,617.80 and 115,589.40 is: 161,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,589.40 : 161,617.80 = 115,589.40 : x
  2. Step 2: Convert to fraction form
    115,589.40/161,617.80 = 115,589.40/x
  3. Step 3: Cross multiply
    115,589.40x = 161,617.80 × 115,589.40
  4. Step 4: Simplify right side
    115,589.40x = 18,681,304,531.32
  5. Step 5: Solve for x
    x = 18,681,304,531.32/115,589.40
  6. Step 6: Final answer
    x = 161,617.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.