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Finding the Fourth Proportional to 103,655.48, 155,483.13 and 28,775.57

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Solution

The fourth proportional to 103,655.48, 155,483.13 and 28,775.57 is: 43,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,655.48 : 155,483.13 = 28,775.57 : x
  2. Step 2: Convert to fraction form
    103,655.48/155,483.13 = 28,775.57/x
  3. Step 3: Cross multiply
    103,655.48x = 155,483.13 × 28,775.57
  4. Step 4: Simplify right side
    103,655.48x = 4,474,115,691.13
  5. Step 5: Solve for x
    x = 4,474,115,691.13/103,655.48
  6. Step 6: Final answer
    x = 43,163.33

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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.