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Finding the Fourth Proportional to 101,293.82, 139,655.55 and 69,407.36

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Solution

The fourth proportional to 101,293.82, 139,655.55 and 69,407.36 is: 95,693.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,293.82 : 139,655.55 = 69,407.36 : x
  2. Step 2: Convert to fraction form
    101,293.82/139,655.55 = 69,407.36/x
  3. Step 3: Cross multiply
    101,293.82x = 139,655.55 × 69,407.36
  4. Step 4: Simplify right side
    101,293.82x = 9,693,123,034.85
  5. Step 5: Solve for x
    x = 9,693,123,034.85/101,293.82
  6. Step 6: Final answer
    x = 95,693.13

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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.