Home / 123,842.36-170,913.10-70,136.84

Finding the Fourth Proportional to 123,842.36, 170,913.10 and 70,136.84

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Solution

The fourth proportional to 123,842.36, 170,913.10 and 70,136.84 is: 96,794.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,842.36 : 170,913.10 = 70,136.84 : x
  2. Step 2: Convert to fraction form
    123,842.36/170,913.10 = 70,136.84/x
  3. Step 3: Cross multiply
    123,842.36x = 170,913.10 × 70,136.84
  4. Step 4: Simplify right side
    123,842.36x = 11,987,304,748.60
  5. Step 5: Solve for x
    x = 11,987,304,748.60/123,842.36
  6. Step 6: Final answer
    x = 96,794.87

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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.