Home / 154,500.30-231,750.45-121,322.70

Finding the Fourth Proportional to 154,500.30, 231,750.45 and 121,322.70

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Solution

The fourth proportional to 154,500.30, 231,750.45 and 121,322.70 is: 181,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,500.30 : 231,750.45 = 121,322.70 : x
  2. Step 2: Convert to fraction form
    154,500.30/231,750.45 = 121,322.70/x
  3. Step 3: Cross multiply
    154,500.30x = 231,750.45 × 121,322.70
  4. Step 4: Simplify right side
    154,500.30x = 28,116,590,320.22
  5. Step 5: Solve for x
    x = 28,116,590,320.22/154,500.30
  6. Step 6: Final answer
    x = 181,984.05

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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.