Home / 123,621.53-170,569.10-83,409.89

Finding the Fourth Proportional to 123,621.53, 170,569.10 and 83,409.89

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Solution

The fourth proportional to 123,621.53, 170,569.10 and 83,409.89 is: 115,086.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,621.53 : 170,569.10 = 83,409.89 : x
  2. Step 2: Convert to fraction form
    123,621.53/170,569.10 = 83,409.89/x
  3. Step 3: Cross multiply
    123,621.53x = 170,569.10 × 83,409.89
  4. Step 4: Simplify right side
    123,621.53x = 14,227,149,451.35
  5. Step 5: Solve for x
    x = 14,227,149,451.35/123,621.53
  6. Step 6: Final answer
    x = 115,086.34

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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.