Home / 157,057.75-235,662.23-78,178.87

Finding the Fourth Proportional to 157,057.75, 235,662.23 and 78,178.87

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Solution

The fourth proportional to 157,057.75, 235,662.23 and 78,178.87 is: 117,305.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,057.75 : 235,662.23 = 78,178.87 : x
  2. Step 2: Convert to fraction form
    157,057.75/235,662.23 = 78,178.87/x
  3. Step 3: Cross multiply
    157,057.75x = 235,662.23 × 78,178.87
  4. Step 4: Simplify right side
    157,057.75x = 18,423,806,452.19
  5. Step 5: Solve for x
    x = 18,423,806,452.19/157,057.75
  6. Step 6: Final answer
    x = 117,305.94

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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.