Home / 92,828.65-139,139.29-85,355.59

Finding the Fourth Proportional to 92,828.65, 139,139.29 and 85,355.59

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Solution

The fourth proportional to 92,828.65, 139,139.29 and 85,355.59 is: 127,938.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,828.65 : 139,139.29 = 85,355.59 : x
  2. Step 2: Convert to fraction form
    92,828.65/139,139.29 = 85,355.59/x
  3. Step 3: Cross multiply
    92,828.65x = 139,139.29 × 85,355.59
  4. Step 4: Simplify right side
    92,828.65x = 11,876,315,281.05
  5. Step 5: Solve for x
    x = 11,876,315,281.05/92,828.65
  6. Step 6: Final answer
    x = 127,938.04

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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.