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Finding the Fourth Proportional to 171,360.80, 256,909.36 and 87,051.68

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Solution

The fourth proportional to 171,360.80, 256,909.36 and 87,051.68 is: 130,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,360.80 : 256,909.36 = 87,051.68 : x
  2. Step 2: Convert to fraction form
    171,360.80/256,909.36 = 87,051.68/x
  3. Step 3: Cross multiply
    171,360.80x = 256,909.36 × 87,051.68
  4. Step 4: Simplify right side
    171,360.80x = 22,364,391,395.72
  5. Step 5: Solve for x
    x = 22,364,391,395.72/171,360.80
  6. Step 6: Final answer
    x = 130,510.54

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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.