Home / 136,908.90-205,363.35-115,257.60

Finding the Fourth Proportional to 136,908.90, 205,363.35 and 115,257.60

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Solution

The fourth proportional to 136,908.90, 205,363.35 and 115,257.60 is: 172,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,908.90 : 205,363.35 = 115,257.60 : x
  2. Step 2: Convert to fraction form
    136,908.90/205,363.35 = 115,257.60/x
  3. Step 3: Cross multiply
    136,908.90x = 205,363.35 × 115,257.60
  4. Step 4: Simplify right side
    136,908.90x = 23,669,686,848.96
  5. Step 5: Solve for x
    x = 23,669,686,848.96/136,908.90
  6. Step 6: Final answer
    x = 172,886.40

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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.