Home / 92,829.65-139,140.79-85,356.59

Finding the Fourth Proportional to 92,829.65, 139,140.79 and 85,356.59

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Solution

The fourth proportional to 92,829.65, 139,140.79 and 85,356.59 is: 127,939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,829.65 : 139,140.79 = 85,356.59 : x
  2. Step 2: Convert to fraction form
    92,829.65/139,140.79 = 85,356.59/x
  3. Step 3: Cross multiply
    92,829.65x = 139,140.79 × 85,356.59
  4. Step 4: Simplify right side
    92,829.65x = 11,876,583,364.31
  5. Step 5: Solve for x
    x = 11,876,583,364.31/92,829.65
  6. Step 6: Final answer
    x = 127,939.55

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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.