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Finding the Fourth Proportional to 117,439.77, 161,843.16 and 115,280.52

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Solution

The fourth proportional to 117,439.77, 161,843.16 and 115,280.52 is: 158,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,439.77 : 161,843.16 = 115,280.52 : x
  2. Step 2: Convert to fraction form
    117,439.77/161,843.16 = 115,280.52/x
  3. Step 3: Cross multiply
    117,439.77x = 161,843.16 × 115,280.52
  4. Step 4: Simplify right side
    117,439.77x = 18,657,363,643.24
  5. Step 5: Solve for x
    x = 18,657,363,643.24/117,439.77
  6. Step 6: Final answer
    x = 158,867.51

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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.