Home / 104,128.14-143,680.59-61,679.82

Finding the Fourth Proportional to 104,128.14, 143,680.59 and 61,679.82

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Solution

The fourth proportional to 104,128.14, 143,680.59 and 61,679.82 is: 85,108.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,128.14 : 143,680.59 = 61,679.82 : x
  2. Step 2: Convert to fraction form
    104,128.14/143,680.59 = 61,679.82/x
  3. Step 3: Cross multiply
    104,128.14x = 143,680.59 × 61,679.82
  4. Step 4: Simplify right side
    104,128.14x = 8,862,192,928.69
  5. Step 5: Solve for x
    x = 8,862,192,928.69/104,128.14
  6. Step 6: Final answer
    x = 85,108.53

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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.