Home / 211,890.40-317,835.56-54,113.20

Finding the Fourth Proportional to 211,890.40, 317,835.56 and 54,113.20

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Solution

The fourth proportional to 211,890.40, 317,835.56 and 54,113.20 is: 81,169.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,890.40 : 317,835.56 = 54,113.20 : x
  2. Step 2: Convert to fraction form
    211,890.40/317,835.56 = 54,113.20/x
  3. Step 3: Cross multiply
    211,890.40x = 317,835.56 × 54,113.20
  4. Step 4: Simplify right side
    211,890.40x = 17,199,099,225.39
  5. Step 5: Solve for x
    x = 17,199,099,225.39/211,890.40
  6. Step 6: Final answer
    x = 81,169.79

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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.