Home / 117,931.20-176,605.20-78,273.60

Finding the Fourth Proportional to 117,931.20, 176,605.20 and 78,273.60

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Solution

The fourth proportional to 117,931.20, 176,605.20 and 78,273.60 is: 117,216.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,931.20 : 176,605.20 = 78,273.60 : x
  2. Step 2: Convert to fraction form
    117,931.20/176,605.20 = 78,273.60/x
  3. Step 3: Cross multiply
    117,931.20x = 176,605.20 × 78,273.60
  4. Step 4: Simplify right side
    117,931.20x = 13,823,524,782.72
  5. Step 5: Solve for x
    x = 13,823,524,782.72/117,931.20
  6. Step 6: Final answer
    x = 117,216.86

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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.