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Finding the Fourth Proportional to 171,875.04, 257,819.54 and 81,871.48

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Solution

The fourth proportional to 171,875.04, 257,819.54 and 81,871.48 is: 122,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,875.04 : 257,819.54 = 81,871.48 : x
  2. Step 2: Convert to fraction form
    171,875.04/257,819.54 = 81,871.48/x
  3. Step 3: Cross multiply
    171,875.04x = 257,819.54 × 81,871.48
  4. Step 4: Simplify right side
    171,875.04x = 21,108,068,756.68
  5. Step 5: Solve for x
    x = 21,108,068,756.68/171,875.04
  6. Step 6: Final answer
    x = 122,810.55

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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.