Home / 157,057.50-235,661.85-78,178.62

Finding the Fourth Proportional to 157,057.50, 235,661.85 and 78,178.62

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Solution

The fourth proportional to 157,057.50, 235,661.85 and 78,178.62 is: 117,305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,057.50 : 235,661.85 = 78,178.62 : x
  2. Step 2: Convert to fraction form
    157,057.50/235,661.85 = 78,178.62/x
  3. Step 3: Cross multiply
    157,057.50x = 235,661.85 × 78,178.62
  4. Step 4: Simplify right side
    157,057.50x = 18,423,718,219.65
  5. Step 5: Solve for x
    x = 18,423,718,219.65/157,057.50
  6. Step 6: Final answer
    x = 117,305.56

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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.