Home / 139,511.30-209,266.95-92,272.10

Finding the Fourth Proportional to 139,511.30, 209,266.95 and 92,272.10

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Solution

The fourth proportional to 139,511.30, 209,266.95 and 92,272.10 is: 138,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,511.30 : 209,266.95 = 92,272.10 : x
  2. Step 2: Convert to fraction form
    139,511.30/209,266.95 = 92,272.10/x
  3. Step 3: Cross multiply
    139,511.30x = 209,266.95 × 92,272.10
  4. Step 4: Simplify right side
    139,511.30x = 19,309,500,937.10
  5. Step 5: Solve for x
    x = 19,309,500,937.10/139,511.30
  6. Step 6: Final answer
    x = 138,408.15

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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.