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Finding the Fourth Proportional to 207,989.55, 287,025.63 and 117,364.71

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Solution

The fourth proportional to 207,989.55, 287,025.63 and 117,364.71 is: 161,963.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,989.55 : 287,025.63 = 117,364.71 : x
  2. Step 2: Convert to fraction form
    207,989.55/287,025.63 = 117,364.71/x
  3. Step 3: Cross multiply
    207,989.55x = 287,025.63 × 117,364.71
  4. Step 4: Simplify right side
    207,989.55x = 33,686,679,827.52
  5. Step 5: Solve for x
    x = 33,686,679,827.52/207,989.55
  6. Step 6: Final answer
    x = 161,963.33

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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.