Home / 149,258.70-205,819.16-115,272.72

Finding the Fourth Proportional to 149,258.70, 205,819.16 and 115,272.72

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Solution

The fourth proportional to 149,258.70, 205,819.16 and 115,272.72 is: 158,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,258.70 : 205,819.16 = 115,272.72 : x
  2. Step 2: Convert to fraction form
    149,258.70/205,819.16 = 115,272.72/x
  3. Step 3: Cross multiply
    149,258.70x = 205,819.16 × 115,272.72
  4. Step 4: Simplify right side
    149,258.70x = 23,725,333,824.95
  5. Step 5: Solve for x
    x = 23,725,333,824.95/149,258.70
  6. Step 6: Final answer
    x = 158,954.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.