Home / 154,421.40-231,632.10-109,320.60

Finding the Fourth Proportional to 154,421.40, 231,632.10 and 109,320.60

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Solution

The fourth proportional to 154,421.40, 231,632.10 and 109,320.60 is: 163,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.40 : 231,632.10 = 109,320.60 : x
  2. Step 2: Convert to fraction form
    154,421.40/231,632.10 = 109,320.60/x
  3. Step 3: Cross multiply
    154,421.40x = 231,632.10 × 109,320.60
  4. Step 4: Simplify right side
    154,421.40x = 25,322,160,151.26
  5. Step 5: Solve for x
    x = 25,322,160,151.26/154,421.40
  6. Step 6: Final answer
    x = 163,980.90

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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.