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Finding the Fourth Proportional to 134,645.73, 185,802.65 and 74,213.04

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Solution

The fourth proportional to 134,645.73, 185,802.65 and 74,213.04 is: 102,409.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,645.73 : 185,802.65 = 74,213.04 : x
  2. Step 2: Convert to fraction form
    134,645.73/185,802.65 = 74,213.04/x
  3. Step 3: Cross multiply
    134,645.73x = 185,802.65 × 74,213.04
  4. Step 4: Simplify right side
    134,645.73x = 13,788,979,125.49
  5. Step 5: Solve for x
    x = 13,788,979,125.49/134,645.73
  6. Step 6: Final answer
    x = 102,409.33

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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.