Home / 171,541.52-257,142-81,426.32

Finding the Fourth Proportional to 171,541.52, 257,142 and 81,426.32

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Solution

The fourth proportional to 171,541.52, 257,142 and 81,426.32 is: 122,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,541.52 : 257,142 = 81,426.32 : x
  2. Step 2: Convert to fraction form
    171,541.52/257,142 = 81,426.32/x
  3. Step 3: Cross multiply
    171,541.52x = 257,142 × 81,426.32
  4. Step 4: Simplify right side
    171,541.52x = 20,938,126,777.44
  5. Step 5: Solve for x
    x = 20,938,126,777.44/171,541.52
  6. Step 6: Final answer
    x = 122,058.65

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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.