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Finding the Fourth Proportional to 124,797, 172,159.65 and 81,757.79

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Solution

The fourth proportional to 124,797, 172,159.65 and 81,757.79 is: 112,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,797 : 172,159.65 = 81,757.79 : x
  2. Step 2: Convert to fraction form
    124,797/172,159.65 = 81,757.79/x
  3. Step 3: Cross multiply
    124,797x = 172,159.65 × 81,757.79
  4. Step 4: Simplify right side
    124,797x = 14,075,392,511.17
  5. Step 5: Solve for x
    x = 14,075,392,511.17/124,797
  6. Step 6: Final answer
    x = 112,786.31

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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.