Home / 189,258.63-261,177.15-103,217.76

Finding the Fourth Proportional to 189,258.63, 261,177.15 and 103,217.76

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Solution

The fourth proportional to 189,258.63, 261,177.15 and 103,217.76 is: 142,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,258.63 : 261,177.15 = 103,217.76 : x
  2. Step 2: Convert to fraction form
    189,258.63/261,177.15 = 103,217.76/x
  3. Step 3: Cross multiply
    189,258.63x = 261,177.15 × 103,217.76
  4. Step 4: Simplify right side
    189,258.63x = 26,958,119,080.30
  5. Step 5: Solve for x
    x = 26,958,119,080.30/189,258.63
  6. Step 6: Final answer
    x = 142,440.63

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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.