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Finding the Fourth Proportional to 134,932.74, 186,204.88 and 74,501.88

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Solution

The fourth proportional to 134,932.74, 186,204.88 and 74,501.88 is: 102,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,932.74 : 186,204.88 = 74,501.88 : x
  2. Step 2: Convert to fraction form
    134,932.74/186,204.88 = 74,501.88/x
  3. Step 3: Cross multiply
    134,932.74x = 186,204.88 × 74,501.88
  4. Step 4: Simplify right side
    134,932.74x = 13,872,613,625.17
  5. Step 5: Solve for x
    x = 13,872,613,625.17/134,932.74
  6. Step 6: Final answer
    x = 102,811.32

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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.