Home / 121,433.79-181,223.30-108,147.77

Finding the Fourth Proportional to 121,433.79, 181,223.30 and 108,147.77

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Solution

The fourth proportional to 121,433.79, 181,223.30 and 108,147.77 is: 161,395.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,433.79 : 181,223.30 = 108,147.77 : x
  2. Step 2: Convert to fraction form
    121,433.79/181,223.30 = 108,147.77/x
  3. Step 3: Cross multiply
    121,433.79x = 181,223.30 × 108,147.77
  4. Step 4: Simplify right side
    121,433.79x = 19,598,894,320.19
  5. Step 5: Solve for x
    x = 19,598,894,320.19/121,433.79
  6. Step 6: Final answer
    x = 161,395.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.