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Finding the Fourth Proportional to 101,192.70, 139,654.35 and 55,874.82

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Solution

The fourth proportional to 101,192.70, 139,654.35 and 55,874.82 is: 77,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,192.70 : 139,654.35 = 55,874.82 : x
  2. Step 2: Convert to fraction form
    101,192.70/139,654.35 = 55,874.82/x
  3. Step 3: Cross multiply
    101,192.70x = 139,654.35 × 55,874.82
  4. Step 4: Simplify right side
    101,192.70x = 7,803,161,668.47
  5. Step 5: Solve for x
    x = 7,803,161,668.47/101,192.70
  6. Step 6: Final answer
    x = 77,111.90

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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.