Home / 157,207.20-235,662.56-78,246.78

Finding the Fourth Proportional to 157,207.20, 235,662.56 and 78,246.78

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Solution

The fourth proportional to 157,207.20, 235,662.56 and 78,246.78 is: 117,296.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,207.20 : 235,662.56 = 78,246.78 : x
  2. Step 2: Convert to fraction form
    157,207.20/235,662.56 = 78,246.78/x
  3. Step 3: Cross multiply
    157,207.20x = 235,662.56 × 78,246.78
  4. Step 4: Simplify right side
    157,207.20x = 18,439,836,486.56
  5. Step 5: Solve for x
    x = 18,439,836,486.56/157,207.20
  6. Step 6: Final answer
    x = 117,296.39

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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.