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Finding the Fourth Proportional to 169,983.60, 255,048.30 and 86,877.60

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Solution

The fourth proportional to 169,983.60, 255,048.30 and 86,877.60 is: 130,353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,983.60 : 255,048.30 = 86,877.60 : x
  2. Step 2: Convert to fraction form
    169,983.60/255,048.30 = 86,877.60/x
  3. Step 3: Cross multiply
    169,983.60x = 255,048.30 × 86,877.60
  4. Step 4: Simplify right side
    169,983.60x = 22,157,984,188.08
  5. Step 5: Solve for x
    x = 22,157,984,188.08/169,983.60
  6. Step 6: Final answer
    x = 130,353.66

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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.