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Finding the Fourth Proportional to 134,679, 185,862.78 and 75,063

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Solution

The fourth proportional to 134,679, 185,862.78 and 75,063 is: 103,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,679 : 185,862.78 = 75,063 : x
  2. Step 2: Convert to fraction form
    134,679/185,862.78 = 75,063/x
  3. Step 3: Cross multiply
    134,679x = 185,862.78 × 75,063
  4. Step 4: Simplify right side
    134,679x = 13,951,417,855.14
  5. Step 5: Solve for x
    x = 13,951,417,855.14/134,679
  6. Step 6: Final answer
    x = 103,590.15

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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.