Home / 118,308.63-177,283.38-86,739.71

Finding the Fourth Proportional to 118,308.63, 177,283.38 and 86,739.71

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Solution

The fourth proportional to 118,308.63, 177,283.38 and 86,739.71 is: 129,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,308.63 : 177,283.38 = 86,739.71 : x
  2. Step 2: Convert to fraction form
    118,308.63/177,283.38 = 86,739.71/x
  3. Step 3: Cross multiply
    118,308.63x = 177,283.38 × 86,739.71
  4. Step 4: Simplify right side
    118,308.63x = 15,377,509,405.10
  5. Step 5: Solve for x
    x = 15,377,509,405.10/118,308.63
  6. Step 6: Final answer
    x = 129,977.91

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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.