Home / 212,637.90-319,000.05-72,410.70

Finding the Fourth Proportional to 212,637.90, 319,000.05 and 72,410.70

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Solution

The fourth proportional to 212,637.90, 319,000.05 and 72,410.70 is: 108,630.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,637.90 : 319,000.05 = 72,410.70 : x
  2. Step 2: Convert to fraction form
    212,637.90/319,000.05 = 72,410.70/x
  3. Step 3: Cross multiply
    212,637.90x = 319,000.05 × 72,410.70
  4. Step 4: Simplify right side
    212,637.90x = 23,099,016,920.54
  5. Step 5: Solve for x
    x = 23,099,016,920.54/212,637.90
  6. Step 6: Final answer
    x = 108,630.76

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1.5x scale

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.