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Finding the Fourth Proportional to 103,614.98, 155,422.86 and 28,740.98

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Solution

The fourth proportional to 103,614.98, 155,422.86 and 28,740.98 is: 43,111.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.98 : 155,422.86 = 28,740.98 : x
  2. Step 2: Convert to fraction form
    103,614.98/155,422.86 = 28,740.98/x
  3. Step 3: Cross multiply
    103,614.98x = 155,422.86 × 28,740.98
  4. Step 4: Simplify right side
    103,614.98x = 4,467,005,310.80
  5. Step 5: Solve for x
    x = 4,467,005,310.80/103,614.98
  6. Step 6: Final answer
    x = 43,111.58

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1.5x scale

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.