Home / 171,509.48-257,126.82-81,507.02

Finding the Fourth Proportional to 171,509.48, 257,126.82 and 81,507.02

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Solution

The fourth proportional to 171,509.48, 257,126.82 and 81,507.02 is: 122,195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,509.48 : 257,126.82 = 81,507.02 : x
  2. Step 2: Convert to fraction form
    171,509.48/257,126.82 = 81,507.02/x
  3. Step 3: Cross multiply
    171,509.48x = 257,126.82 × 81,507.02
  4. Step 4: Simplify right side
    171,509.48x = 20,957,639,574.64
  5. Step 5: Solve for x
    x = 20,957,639,574.64/171,509.48
  6. Step 6: Final answer
    x = 122,195.23

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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.