Home / 143,179.20-197,575.20-86,587.20

Finding the Fourth Proportional to 143,179.20, 197,575.20 and 86,587.20

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Solution

The fourth proportional to 143,179.20, 197,575.20 and 86,587.20 is: 119,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,179.20 : 197,575.20 = 86,587.20 : x
  2. Step 2: Convert to fraction form
    143,179.20/197,575.20 = 86,587.20/x
  3. Step 3: Cross multiply
    143,179.20x = 197,575.20 × 86,587.20
  4. Step 4: Simplify right side
    143,179.20x = 17,107,483,357.44
  5. Step 5: Solve for x
    x = 17,107,483,357.44/143,179.20
  6. Step 6: Final answer
    x = 119,483.02

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1.5x scale

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.