Home / 101,128.68-139,557.48-55,806.66

Finding the Fourth Proportional to 101,128.68, 139,557.48 and 55,806.66

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Solution

The fourth proportional to 101,128.68, 139,557.48 and 55,806.66 is: 77,013.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,128.68 : 139,557.48 = 55,806.66 : x
  2. Step 2: Convert to fraction form
    101,128.68/139,557.48 = 55,806.66/x
  3. Step 3: Cross multiply
    101,128.68x = 139,557.48 × 55,806.66
  4. Step 4: Simplify right side
    101,128.68x = 7,788,236,836.82
  5. Step 5: Solve for x
    x = 7,788,236,836.82/101,128.68
  6. Step 6: Final answer
    x = 77,013.14

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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.