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Finding the Fourth Proportional to 101,266.76, 139,743.90 and 58,243.01

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Solution

The fourth proportional to 101,266.76, 139,743.90 and 58,243.01 is: 80,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,266.76 : 139,743.90 = 58,243.01 : x
  2. Step 2: Convert to fraction form
    101,266.76/139,743.90 = 58,243.01/x
  3. Step 3: Cross multiply
    101,266.76x = 139,743.90 × 58,243.01
  4. Step 4: Simplify right side
    101,266.76x = 8,139,104,666.42
  5. Step 5: Solve for x
    x = 8,139,104,666.42/101,266.76
  6. Step 6: Final answer
    x = 80,372.91

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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.