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Finding the Fourth Proportional to 95,809.08, 143,787.40 and 77,134.80

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Solution

The fourth proportional to 95,809.08, 143,787.40 and 77,134.80 is: 115,761.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,809.08 : 143,787.40 = 77,134.80 : x
  2. Step 2: Convert to fraction form
    95,809.08/143,787.40 = 77,134.80/x
  3. Step 3: Cross multiply
    95,809.08x = 143,787.40 × 77,134.80
  4. Step 4: Simplify right side
    95,809.08x = 11,091,012,341.52
  5. Step 5: Solve for x
    x = 11,091,012,341.52/95,809.08
  6. Step 6: Final answer
    x = 115,761.60

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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.