Home / 103,614.26-155,421.39-68,545.72

Finding the Fourth Proportional to 103,614.26, 155,421.39 and 68,545.72

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Solution

The fourth proportional to 103,614.26, 155,421.39 and 68,545.72 is: 102,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.26 : 155,421.39 = 68,545.72 : x
  2. Step 2: Convert to fraction form
    103,614.26/155,421.39 = 68,545.72/x
  3. Step 3: Cross multiply
    103,614.26x = 155,421.39 × 68,545.72
  4. Step 4: Simplify right side
    103,614.26x = 10,653,470,303.84
  5. Step 5: Solve for x
    x = 10,653,470,303.84/103,614.26
  6. Step 6: Final answer
    x = 102,818.57

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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.