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Finding the Fourth Proportional to 153,840.60, 230,858.10 and 90,660.60

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Solution

The fourth proportional to 153,840.60, 230,858.10 and 90,660.60 is: 136,048.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,840.60 : 230,858.10 = 90,660.60 : x
  2. Step 2: Convert to fraction form
    153,840.60/230,858.10 = 90,660.60/x
  3. Step 3: Cross multiply
    153,840.60x = 230,858.10 × 90,660.60
  4. Step 4: Simplify right side
    153,840.60x = 20,929,733,860.86
  5. Step 5: Solve for x
    x = 20,929,733,860.86/153,840.60
  6. Step 6: Final answer
    x = 136,048.18

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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.