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Finding the Fourth Proportional to 115,190.40, 158,943.47 and 64,191.94

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Solution

The fourth proportional to 115,190.40, 158,943.47 and 64,191.94 is: 88,574.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,190.40 : 158,943.47 = 64,191.94 : x
  2. Step 2: Convert to fraction form
    115,190.40/158,943.47 = 64,191.94/x
  3. Step 3: Cross multiply
    115,190.40x = 158,943.47 × 64,191.94
  4. Step 4: Simplify right side
    115,190.40x = 10,202,889,850.11
  5. Step 5: Solve for x
    x = 10,202,889,850.11/115,190.40
  6. Step 6: Final answer
    x = 88,574.14

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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.