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Finding the Fourth Proportional to 134,798.64, 186,022.74 and 74,370

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Solution

The fourth proportional to 134,798.64, 186,022.74 and 74,370 is: 102,630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,798.64 : 186,022.74 = 74,370 : x
  2. Step 2: Convert to fraction form
    134,798.64/186,022.74 = 74,370/x
  3. Step 3: Cross multiply
    134,798.64x = 186,022.74 × 74,370
  4. Step 4: Simplify right side
    134,798.64x = 13,834,511,173.80
  5. Step 5: Solve for x
    x = 13,834,511,173.80/134,798.64
  6. Step 6: Final answer
    x = 102,630.94

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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.