Home / 121,430.20-167,651.76-83,253.28

Finding the Fourth Proportional to 121,430.20, 167,651.76 and 83,253.28

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Solution

The fourth proportional to 121,430.20, 167,651.76 and 83,253.28 is: 114,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,430.20 : 167,651.76 = 83,253.28 : x
  2. Step 2: Convert to fraction form
    121,430.20/167,651.76 = 83,253.28/x
  3. Step 3: Cross multiply
    121,430.20x = 167,651.76 × 83,253.28
  4. Step 4: Simplify right side
    121,430.20x = 13,957,558,917.77
  5. Step 5: Solve for x
    x = 13,957,558,917.77/121,430.20
  6. Step 6: Final answer
    x = 114,943.06

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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.