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Finding the Fourth Proportional to 169,710.60, 254,220.30 and 86,651.40

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Solution

The fourth proportional to 169,710.60, 254,220.30 and 86,651.40 is: 129,800.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,710.60 : 254,220.30 = 86,651.40 : x
  2. Step 2: Convert to fraction form
    169,710.60/254,220.30 = 86,651.40/x
  3. Step 3: Cross multiply
    169,710.60x = 254,220.30 × 86,651.40
  4. Step 4: Simplify right side
    169,710.60x = 22,028,544,903.42
  5. Step 5: Solve for x
    x = 22,028,544,903.42/169,710.60
  6. Step 6: Final answer
    x = 129,800.64

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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.