Home / 149,140.78-205,827.95-84,631.05

Finding the Fourth Proportional to 149,140.78, 205,827.95 and 84,631.05

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Solution

The fourth proportional to 149,140.78, 205,827.95 and 84,631.05 is: 116,798.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,140.78 : 205,827.95 = 84,631.05 : x
  2. Step 2: Convert to fraction form
    149,140.78/205,827.95 = 84,631.05/x
  3. Step 3: Cross multiply
    149,140.78x = 205,827.95 × 84,631.05
  4. Step 4: Simplify right side
    149,140.78x = 17,419,435,739.43
  5. Step 5: Solve for x
    x = 17,419,435,739.43/149,140.78
  6. Step 6: Final answer
    x = 116,798.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.