Home / 212,972.60-319,497.15-72,698.42

Finding the Fourth Proportional to 212,972.60, 319,497.15 and 72,698.42

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Solution

The fourth proportional to 212,972.60, 319,497.15 and 72,698.42 is: 109,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,972.60 : 319,497.15 = 72,698.42 : x
  2. Step 2: Convert to fraction form
    212,972.60/319,497.15 = 72,698.42/x
  3. Step 3: Cross multiply
    212,972.60x = 319,497.15 × 72,698.42
  4. Step 4: Simplify right side
    212,972.60x = 23,226,937,999.50
  5. Step 5: Solve for x
    x = 23,226,937,999.50/212,972.60
  6. Step 6: Final answer
    x = 109,060.69

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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.