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Finding the Fourth Proportional to 112,258.76, 154,917.30 and 61,957.72

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Solution

The fourth proportional to 112,258.76, 154,917.30 and 61,957.72 is: 85,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,258.76 : 154,917.30 = 61,957.72 : x
  2. Step 2: Convert to fraction form
    112,258.76/154,917.30 = 61,957.72/x
  3. Step 3: Cross multiply
    112,258.76x = 154,917.30 × 61,957.72
  4. Step 4: Simplify right side
    112,258.76x = 9,598,322,696.56
  5. Step 5: Solve for x
    x = 9,598,322,696.56/112,258.76
  6. Step 6: Final answer
    x = 85,501.77

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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.