Home / 118,921.38-178,411.80-83,929.38

Finding the Fourth Proportional to 118,921.38, 178,411.80 and 83,929.38

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Solution

The fourth proportional to 118,921.38, 178,411.80 and 83,929.38 is: 125,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,921.38 : 178,411.80 = 83,929.38 : x
  2. Step 2: Convert to fraction form
    118,921.38/178,411.80 = 83,929.38/x
  3. Step 3: Cross multiply
    118,921.38x = 178,411.80 × 83,929.38
  4. Step 4: Simplify right side
    118,921.38x = 14,973,991,758.68
  5. Step 5: Solve for x
    x = 14,973,991,758.68/118,921.38
  6. Step 6: Final answer
    x = 125,915.05

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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.