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Finding the Fourth Proportional to 134,894.80, 186,153.76 and 74,465.43

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Solution

The fourth proportional to 134,894.80, 186,153.76 and 74,465.43 is: 102,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,894.80 : 186,153.76 = 74,465.43 : x
  2. Step 2: Convert to fraction form
    134,894.80/186,153.76 = 74,465.43/x
  3. Step 3: Cross multiply
    134,894.80x = 186,153.76 × 74,465.43
  4. Step 4: Simplify right side
    134,894.80x = 13,862,019,784.52
  5. Step 5: Solve for x
    x = 13,862,019,784.52/134,894.80
  6. Step 6: Final answer
    x = 102,761.71

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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.