Home / 211,772.57-317,412.68-78,567.86

Finding the Fourth Proportional to 211,772.57, 317,412.68 and 78,567.86

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Solution

The fourth proportional to 211,772.57, 317,412.68 and 78,567.86 is: 117,760.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,772.57 : 317,412.68 = 78,567.86 : x
  2. Step 2: Convert to fraction form
    211,772.57/317,412.68 = 78,567.86/x
  3. Step 3: Cross multiply
    211,772.57x = 317,412.68 × 78,567.86
  4. Step 4: Simplify right side
    211,772.57x = 24,938,435,405.16
  5. Step 5: Solve for x
    x = 24,938,435,405.16/211,772.57
  6. Step 6: Final answer
    x = 117,760.46

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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.