Home / 118,685.10-178,029.45-38,722.71

Finding the Fourth Proportional to 118,685.10, 178,029.45 and 38,722.71

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Solution

The fourth proportional to 118,685.10, 178,029.45 and 38,722.71 is: 58,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,685.10 : 178,029.45 = 38,722.71 : x
  2. Step 2: Convert to fraction form
    118,685.10/178,029.45 = 38,722.71/x
  3. Step 3: Cross multiply
    118,685.10x = 178,029.45 × 38,722.71
  4. Step 4: Simplify right side
    118,685.10x = 6,893,782,763.81
  5. Step 5: Solve for x
    x = 6,893,782,763.81/118,685.10
  6. Step 6: Final answer
    x = 58,084.65

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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.