Home / 154,415.60-231,623.40-71,309.60

Finding the Fourth Proportional to 154,415.60, 231,623.40 and 71,309.60

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Solution

The fourth proportional to 154,415.60, 231,623.40 and 71,309.60 is: 106,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,415.60 : 231,623.40 = 71,309.60 : x
  2. Step 2: Convert to fraction form
    154,415.60/231,623.40 = 71,309.60/x
  3. Step 3: Cross multiply
    154,415.60x = 231,623.40 × 71,309.60
  4. Step 4: Simplify right side
    154,415.60x = 16,516,972,004.64
  5. Step 5: Solve for x
    x = 16,516,972,004.64/154,415.60
  6. Step 6: Final answer
    x = 106,964.40

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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.