Home / 214,709.40-321,966.90-81,545.40

Finding the Fourth Proportional to 214,709.40, 321,966.90 and 81,545.40

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Solution

The fourth proportional to 214,709.40, 321,966.90 and 81,545.40 is: 122,281.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,709.40 : 321,966.90 = 81,545.40 : x
  2. Step 2: Convert to fraction form
    214,709.40/321,966.90 = 81,545.40/x
  3. Step 3: Cross multiply
    214,709.40x = 321,966.90 × 81,545.40
  4. Step 4: Simplify right side
    214,709.40x = 26,254,919,647.26
  5. Step 5: Solve for x
    x = 26,254,919,647.26/214,709.40
  6. Step 6: Final answer
    x = 122,281.18

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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.