Home / 213,897.78-321,162.07-119,312.76

Finding the Fourth Proportional to 213,897.78, 321,162.07 and 119,312.76

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Solution

The fourth proportional to 213,897.78, 321,162.07 and 119,312.76 is: 179,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,897.78 : 321,162.07 = 119,312.76 : x
  2. Step 2: Convert to fraction form
    213,897.78/321,162.07 = 119,312.76/x
  3. Step 3: Cross multiply
    213,897.78x = 321,162.07 × 119,312.76
  4. Step 4: Simplify right side
    213,897.78x = 38,318,732,979.01
  5. Step 5: Solve for x
    x = 38,318,732,979.01/213,897.78
  6. Step 6: Final answer
    x = 179,145.07

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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.