Home / 106,542.36-159,830.88-39,987.72

Finding the Fourth Proportional to 106,542.36, 159,830.88 and 39,987.72

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Solution

The fourth proportional to 106,542.36, 159,830.88 and 39,987.72 is: 59,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,542.36 : 159,830.88 = 39,987.72 : x
  2. Step 2: Convert to fraction form
    106,542.36/159,830.88 = 39,987.72/x
  3. Step 3: Cross multiply
    106,542.36x = 159,830.88 × 39,987.72
  4. Step 4: Simplify right side
    106,542.36x = 6,391,272,476.79
  5. Step 5: Solve for x
    x = 6,391,272,476.79/106,542.36
  6. Step 6: Final answer
    x = 59,988.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.