Home / 85,929.24-128,988.13-68,273.37

Finding the Fourth Proportional to 85,929.24, 128,988.13 and 68,273.37

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Solution

The fourth proportional to 85,929.24, 128,988.13 and 68,273.37 is: 102,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,929.24 : 128,988.13 = 68,273.37 : x
  2. Step 2: Convert to fraction form
    85,929.24/128,988.13 = 68,273.37/x
  3. Step 3: Cross multiply
    85,929.24x = 128,988.13 × 68,273.37
  4. Step 4: Simplify right side
    85,929.24x = 8,806,454,325.10
  5. Step 5: Solve for x
    x = 8,806,454,325.10/85,929.24
  6. Step 6: Final answer
    x = 102,484.96

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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.