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Finding the Fourth Proportional to 148,681.34, 205,174.76 and 80,696.86

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Solution

The fourth proportional to 148,681.34, 205,174.76 and 80,696.86 is: 111,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,681.34 : 205,174.76 = 80,696.86 : x
  2. Step 2: Convert to fraction form
    148,681.34/205,174.76 = 80,696.86/x
  3. Step 3: Cross multiply
    148,681.34x = 205,174.76 × 80,696.86
  4. Step 4: Simplify right side
    148,681.34x = 16,556,957,857.38
  5. Step 5: Solve for x
    x = 16,556,957,857.38/148,681.34
  6. Step 6: Final answer
    x = 111,358.68

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1.5x scale

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.