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Finding the Fourth Proportional to 171,501.48, 257,345.16 and 71,670.45

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Solution

The fourth proportional to 171,501.48, 257,345.16 and 71,670.45 is: 107,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,501.48 : 257,345.16 = 71,670.45 : x
  2. Step 2: Convert to fraction form
    171,501.48/257,345.16 = 71,670.45/x
  3. Step 3: Cross multiply
    171,501.48x = 257,345.16 × 71,670.45
  4. Step 4: Simplify right side
    171,501.48x = 18,444,043,422.52
  5. Step 5: Solve for x
    x = 18,444,043,422.52/171,501.48
  6. Step 6: Final answer
    x = 107,544.51

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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.