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Finding the Fourth Proportional to 134,679.76, 185,849.64 and 74,247.28

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Solution

The fourth proportional to 134,679.76, 185,849.64 and 74,247.28 is: 102,456.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,679.76 : 185,849.64 = 74,247.28 : x
  2. Step 2: Convert to fraction form
    134,679.76/185,849.64 = 74,247.28/x
  3. Step 3: Cross multiply
    134,679.76x = 185,849.64 × 74,247.28
  4. Step 4: Simplify right side
    134,679.76x = 13,798,830,258.98
  5. Step 5: Solve for x
    x = 13,798,830,258.98/134,679.76
  6. Step 6: Final answer
    x = 102,456.60

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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.