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Finding the Fourth Proportional to 171,445.95, 257,326.79 and 87,266.27

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Solution

The fourth proportional to 171,445.95, 257,326.79 and 87,266.27 is: 130,979.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,445.95 : 257,326.79 = 87,266.27 : x
  2. Step 2: Convert to fraction form
    171,445.95/257,326.79 = 87,266.27/x
  3. Step 3: Cross multiply
    171,445.95x = 257,326.79 × 87,266.27
  4. Step 4: Simplify right side
    171,445.95x = 22,455,949,134.37
  5. Step 5: Solve for x
    x = 22,455,949,134.37/171,445.95
  6. Step 6: Final answer
    x = 130,979.76

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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.