Home / 123,485.10-185,227.65-108,969.90

Finding the Fourth Proportional to 123,485.10, 185,227.65 and 108,969.90

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Solution

The fourth proportional to 123,485.10, 185,227.65 and 108,969.90 is: 163,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,485.10 : 185,227.65 = 108,969.90 : x
  2. Step 2: Convert to fraction form
    123,485.10/185,227.65 = 108,969.90/x
  3. Step 3: Cross multiply
    123,485.10x = 185,227.65 × 108,969.90
  4. Step 4: Simplify right side
    123,485.10x = 20,184,238,497.74
  5. Step 5: Solve for x
    x = 20,184,238,497.74/123,485.10
  6. Step 6: Final answer
    x = 163,454.85

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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.