Home / 99,651.08-137,518.42-57,212.20

Finding the Fourth Proportional to 99,651.08, 137,518.42 and 57,212.20

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Solution

The fourth proportional to 99,651.08, 137,518.42 and 57,212.20 is: 78,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651.08 : 137,518.42 = 57,212.20 : x
  2. Step 2: Convert to fraction form
    99,651.08/137,518.42 = 57,212.20/x
  3. Step 3: Cross multiply
    99,651.08x = 137,518.42 × 57,212.20
  4. Step 4: Simplify right side
    99,651.08x = 7,867,731,348.72
  5. Step 5: Solve for x
    x = 7,867,731,348.72/99,651.08
  6. Step 6: Final answer
    x = 78,952.80

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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.