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Finding the Fourth Proportional to 181,696.80, 272,545.20 and 115,430.70

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Solution

The fourth proportional to 181,696.80, 272,545.20 and 115,430.70 is: 173,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,696.80 : 272,545.20 = 115,430.70 : x
  2. Step 2: Convert to fraction form
    181,696.80/272,545.20 = 115,430.70/x
  3. Step 3: Cross multiply
    181,696.80x = 272,545.20 × 115,430.70
  4. Step 4: Simplify right side
    181,696.80x = 31,460,083,217.64
  5. Step 5: Solve for x
    x = 31,460,083,217.64/181,696.80
  6. Step 6: Final answer
    x = 173,146.05

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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.