Home / 157,239.60-235,643.40-100,906.80

Finding the Fourth Proportional to 157,239.60, 235,643.40 and 100,906.80

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Solution

The fourth proportional to 157,239.60, 235,643.40 and 100,906.80 is: 151,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,239.60 : 235,643.40 = 100,906.80 : x
  2. Step 2: Convert to fraction form
    157,239.60/235,643.40 = 100,906.80/x
  3. Step 3: Cross multiply
    157,239.60x = 235,643.40 × 100,906.80
  4. Step 4: Simplify right side
    157,239.60x = 23,778,021,435.12
  5. Step 5: Solve for x
    x = 23,778,021,435.12/157,239.60
  6. Step 6: Final answer
    x = 151,221.58

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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.