Home / 100,896.72-139,092.03-70,588.14

Finding the Fourth Proportional to 100,896.72, 139,092.03 and 70,588.14

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Solution

The fourth proportional to 100,896.72, 139,092.03 and 70,588.14 is: 97,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,896.72 : 139,092.03 = 70,588.14 : x
  2. Step 2: Convert to fraction form
    100,896.72/139,092.03 = 70,588.14/x
  3. Step 3: Cross multiply
    100,896.72x = 139,092.03 × 70,588.14
  4. Step 4: Simplify right side
    100,896.72x = 9,818,247,686.52
  5. Step 5: Solve for x
    x = 9,818,247,686.52/100,896.72
  6. Step 6: Final answer
    x = 97,309.88

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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.