Home / 99,338.20-137,137.51-76,626.20

Finding the Fourth Proportional to 99,338.20, 137,137.51 and 76,626.20

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Solution

The fourth proportional to 99,338.20, 137,137.51 and 76,626.20 is: 105,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,338.20 : 137,137.51 = 76,626.20 : x
  2. Step 2: Convert to fraction form
    99,338.20/137,137.51 = 76,626.20/x
  3. Step 3: Cross multiply
    99,338.20x = 137,137.51 × 76,626.20
  4. Step 4: Simplify right side
    99,338.20x = 10,508,326,276.37
  5. Step 5: Solve for x
    x = 10,508,326,276.37/99,338.20
  6. Step 6: Final answer
    x = 105,783.34

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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.