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Finding the Fourth Proportional to 119,758.40, 179,637.60 and 75,435.20

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Solution

The fourth proportional to 119,758.40, 179,637.60 and 75,435.20 is: 113,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,758.40 : 179,637.60 = 75,435.20 : x
  2. Step 2: Convert to fraction form
    119,758.40/179,637.60 = 75,435.20/x
  3. Step 3: Cross multiply
    119,758.40x = 179,637.60 × 75,435.20
  4. Step 4: Simplify right side
    119,758.40x = 13,550,998,283.52
  5. Step 5: Solve for x
    x = 13,550,998,283.52/119,758.40
  6. Step 6: Final answer
    x = 113,152.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.