Home / 144,841.78-199,878.63-79,429.66

Finding the Fourth Proportional to 144,841.78, 199,878.63 and 79,429.66

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Solution

The fourth proportional to 144,841.78, 199,878.63 and 79,429.66 is: 109,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,841.78 : 199,878.63 = 79,429.66 : x
  2. Step 2: Convert to fraction form
    144,841.78/199,878.63 = 79,429.66/x
  3. Step 3: Cross multiply
    144,841.78x = 199,878.63 × 79,429.66
  4. Step 4: Simplify right side
    144,841.78x = 15,876,291,622.17
  5. Step 5: Solve for x
    x = 15,876,291,622.17/144,841.78
  6. Step 6: Final answer
    x = 109,611.27

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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.