Home / 212,901.50-319,403.56-79,782.92

Finding the Fourth Proportional to 212,901.50, 319,403.56 and 79,782.92

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Solution

The fourth proportional to 212,901.50, 319,403.56 and 79,782.92 is: 119,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,901.50 : 319,403.56 = 79,782.92 : x
  2. Step 2: Convert to fraction form
    212,901.50/319,403.56 = 79,782.92/x
  3. Step 3: Cross multiply
    212,901.50x = 319,403.56 × 79,782.92
  4. Step 4: Simplify right side
    212,901.50x = 25,482,948,675.20
  5. Step 5: Solve for x
    x = 25,482,948,675.20/212,901.50
  6. Step 6: Final answer
    x = 119,693.61

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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.