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Finding the Fourth Proportional to 180,012.61, 248,396.11 and 99,435.30

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Solution

The fourth proportional to 180,012.61, 248,396.11 and 99,435.30 is: 137,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,012.61 : 248,396.11 = 99,435.30 : x
  2. Step 2: Convert to fraction form
    180,012.61/248,396.11 = 99,435.30/x
  3. Step 3: Cross multiply
    180,012.61x = 248,396.11 × 99,435.30
  4. Step 4: Simplify right side
    180,012.61x = 24,699,341,716.68
  5. Step 5: Solve for x
    x = 24,699,341,716.68/180,012.61
  6. Step 6: Final answer
    x = 137,208.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.