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Finding the Fourth Proportional to 117,345.61, 161,943.86 and 66,362.92

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Solution

The fourth proportional to 117,345.61, 161,943.86 and 66,362.92 is: 91,584.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,345.61 : 161,943.86 = 66,362.92 : x
  2. Step 2: Convert to fraction form
    117,345.61/161,943.86 = 66,362.92/x
  3. Step 3: Cross multiply
    117,345.61x = 161,943.86 × 66,362.92
  4. Step 4: Simplify right side
    117,345.61x = 10,747,067,268.89
  5. Step 5: Solve for x
    x = 10,747,067,268.89/117,345.61
  6. Step 6: Final answer
    x = 91,584.74

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1.5x scale

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.