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Finding the Fourth Proportional to 134,978.98, 186,272.40 and 74,551.14

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Solution

The fourth proportional to 134,978.98, 186,272.40 and 74,551.14 is: 102,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,978.98 : 186,272.40 = 74,551.14 : x
  2. Step 2: Convert to fraction form
    134,978.98/186,272.40 = 74,551.14/x
  3. Step 3: Cross multiply
    134,978.98x = 186,272.40 × 74,551.14
  4. Step 4: Simplify right side
    134,978.98x = 13,886,819,770.54
  5. Step 5: Solve for x
    x = 13,886,819,770.54/134,978.98
  6. Step 6: Final answer
    x = 102,881.35

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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.