Home / 103,621.10-155,662.05-100,856.30

Finding the Fourth Proportional to 103,621.10, 155,662.05 and 100,856.30

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Solution

The fourth proportional to 103,621.10, 155,662.05 and 100,856.30 is: 151,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.10 : 155,662.05 = 100,856.30 : x
  2. Step 2: Convert to fraction form
    103,621.10/155,662.05 = 100,856.30/x
  3. Step 3: Cross multiply
    103,621.10x = 155,662.05 × 100,856.30
  4. Step 4: Simplify right side
    103,621.10x = 15,699,498,413.42
  5. Step 5: Solve for x
    x = 15,699,498,413.42/103,621.10
  6. Step 6: Final answer
    x = 151,508.70

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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.