Home / 118,881.12-177,258.84-115,615.20

Finding the Fourth Proportional to 118,881.12, 177,258.84 and 115,615.20

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Solution

The fourth proportional to 118,881.12, 177,258.84 and 115,615.20 is: 172,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,881.12 : 177,258.84 = 115,615.20 : x
  2. Step 2: Convert to fraction form
    118,881.12/177,258.84 = 115,615.20/x
  3. Step 3: Cross multiply
    118,881.12x = 177,258.84 × 115,615.20
  4. Step 4: Simplify right side
    118,881.12x = 20,493,816,238.37
  5. Step 5: Solve for x
    x = 20,493,816,238.37/118,881.12
  6. Step 6: Final answer
    x = 172,389.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.