Home / 121,128.40-181,700.70-41,165.20

Finding the Fourth Proportional to 121,128.40, 181,700.70 and 41,165.20

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Solution

The fourth proportional to 121,128.40, 181,700.70 and 41,165.20 is: 61,750.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128.40 : 181,700.70 = 41,165.20 : x
  2. Step 2: Convert to fraction form
    121,128.40/181,700.70 = 41,165.20/x
  3. Step 3: Cross multiply
    121,128.40x = 181,700.70 × 41,165.20
  4. Step 4: Simplify right side
    121,128.40x = 7,479,745,655.64
  5. Step 5: Solve for x
    x = 7,479,745,655.64/121,128.40
  6. Step 6: Final answer
    x = 61,750.55

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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.