Home / 100,825.79-139,186.82-58,376.12

Finding the Fourth Proportional to 100,825.79, 139,186.82 and 58,376.12

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Solution

The fourth proportional to 100,825.79, 139,186.82 and 58,376.12 is: 80,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,825.79 : 139,186.82 = 58,376.12 : x
  2. Step 2: Convert to fraction form
    100,825.79/139,186.82 = 58,376.12/x
  3. Step 3: Cross multiply
    100,825.79x = 139,186.82 × 58,376.12
  4. Step 4: Simplify right side
    100,825.79x = 8,125,185,956.74
  5. Step 5: Solve for x
    x = 8,125,185,956.74/100,825.79
  6. Step 6: Final answer
    x = 80,586.39

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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.