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Finding the Fourth Proportional to 171,955.55, 257,947.14 and 65,390.46

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Solution

The fourth proportional to 171,955.55, 257,947.14 and 65,390.46 is: 98,090.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,955.55 : 257,947.14 = 65,390.46 : x
  2. Step 2: Convert to fraction form
    171,955.55/257,947.14 = 65,390.46/x
  3. Step 3: Cross multiply
    171,955.55x = 257,947.14 × 65,390.46
  4. Step 4: Simplify right side
    171,955.55x = 16,867,282,140.28
  5. Step 5: Solve for x
    x = 16,867,282,140.28/171,955.55
  6. Step 6: Final answer
    x = 98,090.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.