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Finding the Fourth Proportional to 134,893.83, 186,143.94 and 74,454.78

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Solution

The fourth proportional to 134,893.83, 186,143.94 and 74,454.78 is: 102,742.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,893.83 : 186,143.94 = 74,454.78 : x
  2. Step 2: Convert to fraction form
    134,893.83/186,143.94 = 74,454.78/x
  3. Step 3: Cross multiply
    134,893.83x = 186,143.94 × 74,454.78
  4. Step 4: Simplify right side
    134,893.83x = 13,859,306,101.03
  5. Step 5: Solve for x
    x = 13,859,306,101.03/134,893.83
  6. Step 6: Final answer
    x = 102,742.33

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1.5x scale

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.