Home / 254,629.80-381,985.98-86,160.36

Finding the Fourth Proportional to 254,629.80, 381,985.98 and 86,160.36

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Solution

The fourth proportional to 254,629.80, 381,985.98 and 86,160.36 is: 129,254.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,629.80 : 381,985.98 = 86,160.36 : x
  2. Step 2: Convert to fraction form
    254,629.80/381,985.98 = 86,160.36/x
  3. Step 3: Cross multiply
    254,629.80x = 381,985.98 × 86,160.36
  4. Step 4: Simplify right side
    254,629.80x = 32,912,049,551.75
  5. Step 5: Solve for x
    x = 32,912,049,551.75/254,629.80
  6. Step 6: Final answer
    x = 129,254.51

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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.