Home / 135,512.17-187,000.50-74,258

Finding the Fourth Proportional to 135,512.17, 187,000.50 and 74,258

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Solution

The fourth proportional to 135,512.17, 187,000.50 and 74,258 is: 102,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,512.17 : 187,000.50 = 74,258 : x
  2. Step 2: Convert to fraction form
    135,512.17/187,000.50 = 74,258/x
  3. Step 3: Cross multiply
    135,512.17x = 187,000.50 × 74,258
  4. Step 4: Simplify right side
    135,512.17x = 13,886,283,129
  5. Step 5: Solve for x
    x = 13,886,283,129/135,512.17
  6. Step 6: Final answer
    x = 102,472.59

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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.