Home / 145,037.99-200,178-91,339.85

Finding the Fourth Proportional to 145,037.99, 200,178 and 91,339.85

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Solution

The fourth proportional to 145,037.99, 200,178 and 91,339.85 is: 126,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,037.99 : 200,178 = 91,339.85 : x
  2. Step 2: Convert to fraction form
    145,037.99/200,178 = 91,339.85/x
  3. Step 3: Cross multiply
    145,037.99x = 200,178 × 91,339.85
  4. Step 4: Simplify right side
    145,037.99x = 18,284,228,993.75
  5. Step 5: Solve for x
    x = 18,284,228,993.75/145,037.99
  6. Step 6: Final answer
    x = 126,065.10

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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.