Home / 102,511.10-153,766.65-28,639.10

Finding the Fourth Proportional to 102,511.10, 153,766.65 and 28,639.10

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Solution

The fourth proportional to 102,511.10, 153,766.65 and 28,639.10 is: 42,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,511.10 : 153,766.65 = 28,639.10 : x
  2. Step 2: Convert to fraction form
    102,511.10/153,766.65 = 28,639.10/x
  3. Step 3: Cross multiply
    102,511.10x = 153,766.65 × 28,639.10
  4. Step 4: Simplify right side
    102,511.10x = 4,403,738,466.02
  5. Step 5: Solve for x
    x = 4,403,738,466.02/102,511.10
  6. Step 6: Final answer
    x = 42,958.65

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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.