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Finding the Fourth Proportional to 124,532.75, 171,855.21 and 79,820.75

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Solution

The fourth proportional to 124,532.75, 171,855.21 and 79,820.75 is: 110,152.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,532.75 : 171,855.21 = 79,820.75 : x
  2. Step 2: Convert to fraction form
    124,532.75/171,855.21 = 79,820.75/x
  3. Step 3: Cross multiply
    124,532.75x = 171,855.21 × 79,820.75
  4. Step 4: Simplify right side
    124,532.75x = 13,717,611,753.61
  5. Step 5: Solve for x
    x = 13,717,611,753.61/124,532.75
  6. Step 6: Final answer
    x = 110,152.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.