Home / 212,358.30-318,537.45-118,851.90

Finding the Fourth Proportional to 212,358.30, 318,537.45 and 118,851.90

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Solution

The fourth proportional to 212,358.30, 318,537.45 and 118,851.90 is: 178,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,358.30 : 318,537.45 = 118,851.90 : x
  2. Step 2: Convert to fraction form
    212,358.30/318,537.45 = 118,851.90/x
  3. Step 3: Cross multiply
    212,358.30x = 318,537.45 × 118,851.90
  4. Step 4: Simplify right side
    212,358.30x = 37,858,781,153.66
  5. Step 5: Solve for x
    x = 37,858,781,153.66/212,358.30
  6. Step 6: Final answer
    x = 178,277.85

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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.