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Finding the Fourth Proportional to 103,699.58, 155,528.10 and 28,800.90

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Solution

The fourth proportional to 103,699.58, 155,528.10 and 28,800.90 is: 43,195.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.58 : 155,528.10 = 28,800.90 : x
  2. Step 2: Convert to fraction form
    103,699.58/155,528.10 = 28,800.90/x
  3. Step 3: Cross multiply
    103,699.58x = 155,528.10 × 28,800.90
  4. Step 4: Simplify right side
    103,699.58x = 4,479,349,255.29
  5. Step 5: Solve for x
    x = 4,479,349,255.29/103,699.58
  6. Step 6: Final answer
    x = 43,195.44

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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.