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Finding the Fourth Proportional to 165,722.30, 248,583.45 and 86,860.70

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Solution

The fourth proportional to 165,722.30, 248,583.45 and 86,860.70 is: 130,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,722.30 : 248,583.45 = 86,860.70 : x
  2. Step 2: Convert to fraction form
    165,722.30/248,583.45 = 86,860.70/x
  3. Step 3: Cross multiply
    165,722.30x = 248,583.45 × 86,860.70
  4. Step 4: Simplify right side
    165,722.30x = 21,592,132,475.42
  5. Step 5: Solve for x
    x = 21,592,132,475.42/165,722.30
  6. Step 6: Final answer
    x = 130,291.05

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1.5x scale

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.