Home / 157,739.36-236,412.20-78,876.14

Finding the Fourth Proportional to 157,739.36, 236,412.20 and 78,876.14

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Solution

The fourth proportional to 157,739.36, 236,412.20 and 78,876.14 is: 118,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,739.36 : 236,412.20 = 78,876.14 : x
  2. Step 2: Convert to fraction form
    157,739.36/236,412.20 = 78,876.14/x
  3. Step 3: Cross multiply
    157,739.36x = 236,412.20 × 78,876.14
  4. Step 4: Simplify right side
    157,739.36x = 18,647,280,208.47
  5. Step 5: Solve for x
    x = 18,647,280,208.47/157,739.36
  6. Step 6: Final answer
    x = 118,215.78

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1.5x scale

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.