Home / 154,122.40-231,137.52-80,210.08

Finding the Fourth Proportional to 154,122.40, 231,137.52 and 80,210.08

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Solution

The fourth proportional to 154,122.40, 231,137.52 and 80,210.08 is: 120,291.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,122.40 : 231,137.52 = 80,210.08 : x
  2. Step 2: Convert to fraction form
    154,122.40/231,137.52 = 80,210.08/x
  3. Step 3: Cross multiply
    154,122.40x = 231,137.52 × 80,210.08
  4. Step 4: Simplify right side
    154,122.40x = 18,539,558,970.20
  5. Step 5: Solve for x
    x = 18,539,558,970.20/154,122.40
  6. Step 6: Final answer
    x = 120,291.14

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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.