Home / 212,848.72-319,279.76-79,703.60

Finding the Fourth Proportional to 212,848.72, 319,279.76 and 79,703.60

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Solution

The fourth proportional to 212,848.72, 319,279.76 and 79,703.60 is: 119,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,848.72 : 319,279.76 = 79,703.60 : x
  2. Step 2: Convert to fraction form
    212,848.72/319,279.76 = 79,703.60/x
  3. Step 3: Cross multiply
    212,848.72x = 319,279.76 × 79,703.60
  4. Step 4: Simplify right side
    212,848.72x = 25,447,746,279.14
  5. Step 5: Solve for x
    x = 25,447,746,279.14/212,848.72
  6. Step 6: Final answer
    x = 119,557.90

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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.