Home / 212,913.04-319,398.72-72,634

Finding the Fourth Proportional to 212,913.04, 319,398.72 and 72,634

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Solution

The fourth proportional to 212,913.04, 319,398.72 and 72,634 is: 108,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,913.04 : 319,398.72 = 72,634 : x
  2. Step 2: Convert to fraction form
    212,913.04/319,398.72 = 72,634/x
  3. Step 3: Cross multiply
    212,913.04x = 319,398.72 × 72,634
  4. Step 4: Simplify right side
    212,913.04x = 23,199,206,628.48
  5. Step 5: Solve for x
    x = 23,199,206,628.48/212,913.04
  6. Step 6: Final answer
    x = 108,960.95

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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.