Home / 73,139.10-109,708.65-61,329.30

Finding the Fourth Proportional to 73,139.10, 109,708.65 and 61,329.30

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Solution

The fourth proportional to 73,139.10, 109,708.65 and 61,329.30 is: 91,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,139.10 : 109,708.65 = 61,329.30 : x
  2. Step 2: Convert to fraction form
    73,139.10/109,708.65 = 61,329.30/x
  3. Step 3: Cross multiply
    73,139.10x = 109,708.65 × 61,329.30
  4. Step 4: Simplify right side
    73,139.10x = 6,728,354,708.45
  5. Step 5: Solve for x
    x = 6,728,354,708.45/73,139.10
  6. Step 6: Final answer
    x = 91,993.95

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1.5x scale

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.