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Finding the Fourth Proportional to 171,518.66, 257,513.62 and 87,335.36

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Solution

The fourth proportional to 171,518.66, 257,513.62 and 87,335.36 is: 131,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,518.66 : 257,513.62 = 87,335.36 : x
  2. Step 2: Convert to fraction form
    171,518.66/257,513.62 = 87,335.36/x
  3. Step 3: Cross multiply
    171,518.66x = 257,513.62 × 87,335.36
  4. Step 4: Simplify right side
    171,518.66x = 22,490,044,707.60
  5. Step 5: Solve for x
    x = 22,490,044,707.60/171,518.66
  6. Step 6: Final answer
    x = 131,123.02

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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.