Home / 118,718.12-178,106.38-54,646.31

Finding the Fourth Proportional to 118,718.12, 178,106.38 and 54,646.31

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Solution

The fourth proportional to 118,718.12, 178,106.38 and 54,646.31 is: 81,982.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,718.12 : 178,106.38 = 54,646.31 : x
  2. Step 2: Convert to fraction form
    118,718.12/178,106.38 = 54,646.31/x
  3. Step 3: Cross multiply
    118,718.12x = 178,106.38 × 54,646.31
  4. Step 4: Simplify right side
    118,718.12x = 9,732,856,763.11
  5. Step 5: Solve for x
    x = 9,732,856,763.11/118,718.12
  6. Step 6: Final answer
    x = 81,982.91

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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.