Home / 141,730-195,587.40-78,067.60

Finding the Fourth Proportional to 141,730, 195,587.40 and 78,067.60

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Solution

The fourth proportional to 141,730, 195,587.40 and 78,067.60 is: 107,733.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,730 : 195,587.40 = 78,067.60 : x
  2. Step 2: Convert to fraction form
    141,730/195,587.40 = 78,067.60/x
  3. Step 3: Cross multiply
    141,730x = 195,587.40 × 78,067.60
  4. Step 4: Simplify right side
    141,730x = 15,269,038,908.24
  5. Step 5: Solve for x
    x = 15,269,038,908.24/141,730
  6. Step 6: Final answer
    x = 107,733.29

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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.