Home / 121,004.10-181,700.55-91,455.30

Finding the Fourth Proportional to 121,004.10, 181,700.55 and 91,455.30

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Solution

The fourth proportional to 121,004.10, 181,700.55 and 91,455.30 is: 137,329.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,004.10 : 181,700.55 = 91,455.30 : x
  2. Step 2: Convert to fraction form
    121,004.10/181,700.55 = 91,455.30/x
  3. Step 3: Cross multiply
    121,004.10x = 181,700.55 × 91,455.30
  4. Step 4: Simplify right side
    121,004.10x = 16,617,478,310.42
  5. Step 5: Solve for x
    x = 16,617,478,310.42/121,004.10
  6. Step 6: Final answer
    x = 137,329.88

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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.