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Finding the Fourth Proportional to 134,634.51, 185,794.70 and 74,205.20

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Solution

The fourth proportional to 134,634.51, 185,794.70 and 74,205.20 is: 102,402.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,634.51 : 185,794.70 = 74,205.20 : x
  2. Step 2: Convert to fraction form
    134,634.51/185,794.70 = 74,205.20/x
  3. Step 3: Cross multiply
    134,634.51x = 185,794.70 × 74,205.20
  4. Step 4: Simplify right side
    134,634.51x = 13,786,932,128.98
  5. Step 5: Solve for x
    x = 13,786,932,128.98/134,634.51
  6. Step 6: Final answer
    x = 102,402.66

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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.