Home / 112,715.84-155,560.04-71,881.31

Finding the Fourth Proportional to 112,715.84, 155,560.04 and 71,881.31

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Solution

The fourth proportional to 112,715.84, 155,560.04 and 71,881.31 is: 99,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,715.84 : 155,560.04 = 71,881.31 : x
  2. Step 2: Convert to fraction form
    112,715.84/155,560.04 = 71,881.31/x
  3. Step 3: Cross multiply
    112,715.84x = 155,560.04 × 71,881.31
  4. Step 4: Simplify right side
    112,715.84x = 11,181,858,591.20
  5. Step 5: Solve for x
    x = 11,181,858,591.20/112,715.84
  6. Step 6: Final answer
    x = 99,203.97

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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.