Home / 219,129.29-328,545.61-85,926.41

Finding the Fourth Proportional to 219,129.29, 328,545.61 and 85,926.41

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Solution

The fourth proportional to 219,129.29, 328,545.61 and 85,926.41 is: 128,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,129.29 : 328,545.61 = 85,926.41 : x
  2. Step 2: Convert to fraction form
    219,129.29/328,545.61 = 85,926.41/x
  3. Step 3: Cross multiply
    219,129.29x = 328,545.61 × 85,926.41
  4. Step 4: Simplify right side
    219,129.29x = 28,230,744,788.56
  5. Step 5: Solve for x
    x = 28,230,744,788.56/219,129.29
  6. Step 6: Final answer
    x = 128,831.45

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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.