Home / 121,428.72-167,572.53-67,717.22

Finding the Fourth Proportional to 121,428.72, 167,572.53 and 67,717.22

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Solution

The fourth proportional to 121,428.72, 167,572.53 and 67,717.22 is: 93,450.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,428.72 : 167,572.53 = 67,717.22 : x
  2. Step 2: Convert to fraction form
    121,428.72/167,572.53 = 67,717.22/x
  3. Step 3: Cross multiply
    121,428.72x = 167,572.53 × 67,717.22
  4. Step 4: Simplify right side
    121,428.72x = 11,347,545,042.10
  5. Step 5: Solve for x
    x = 11,347,545,042.10/121,428.72
  6. Step 6: Final answer
    x = 93,450.26

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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.