Home / 99,730.12-137,651.18-57,313.24

Finding the Fourth Proportional to 99,730.12, 137,651.18 and 57,313.24

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Solution

The fourth proportional to 99,730.12, 137,651.18 and 57,313.24 is: 79,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,730.12 : 137,651.18 = 57,313.24 : x
  2. Step 2: Convert to fraction form
    99,730.12/137,651.18 = 57,313.24/x
  3. Step 3: Cross multiply
    99,730.12x = 137,651.18 × 57,313.24
  4. Step 4: Simplify right side
    99,730.12x = 7,889,235,115.62
  5. Step 5: Solve for x
    x = 7,889,235,115.62/99,730.12
  6. Step 6: Final answer
    x = 79,105.84

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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.