Home / 212,730.84-319,151.52-79,621.56

Finding the Fourth Proportional to 212,730.84, 319,151.52 and 79,621.56

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Solution

The fourth proportional to 212,730.84, 319,151.52 and 79,621.56 is: 119,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,730.84 : 319,151.52 = 79,621.56 : x
  2. Step 2: Convert to fraction form
    212,730.84/319,151.52 = 79,621.56/x
  3. Step 3: Cross multiply
    212,730.84x = 319,151.52 × 79,621.56
  4. Step 4: Simplify right side
    212,730.84x = 25,411,341,898.77
  5. Step 5: Solve for x
    x = 25,411,341,898.77/212,730.84
  6. Step 6: Final answer
    x = 119,453.02

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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.