Home / 211,838.24-317,729.07-78,700.37

Finding the Fourth Proportional to 211,838.24, 317,729.07 and 78,700.37

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Solution

The fourth proportional to 211,838.24, 317,729.07 and 78,700.37 is: 118,040.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,838.24 : 317,729.07 = 78,700.37 : x
  2. Step 2: Convert to fraction form
    211,838.24/317,729.07 = 78,700.37/x
  3. Step 3: Cross multiply
    211,838.24x = 317,729.07 × 78,700.37
  4. Step 4: Simplify right side
    211,838.24x = 25,005,393,780.11
  5. Step 5: Solve for x
    x = 25,005,393,780.11/211,838.24
  6. Step 6: Final answer
    x = 118,040.04

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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.