Home / 213,900.18-321,165.68-119,315.16

Finding the Fourth Proportional to 213,900.18, 321,165.68 and 119,315.16

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Solution

The fourth proportional to 213,900.18, 321,165.68 and 119,315.16 is: 179,148.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,900.18 : 321,165.68 = 119,315.16 : x
  2. Step 2: Convert to fraction form
    213,900.18/321,165.68 = 119,315.16/x
  3. Step 3: Cross multiply
    213,900.18x = 321,165.68 × 119,315.16
  4. Step 4: Simplify right side
    213,900.18x = 38,319,934,495.71
  5. Step 5: Solve for x
    x = 38,319,934,495.71/213,900.18
  6. Step 6: Final answer
    x = 179,148.68

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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.