Home / 154,087.12-231,133.74-69,831.72

Finding the Fourth Proportional to 154,087.12, 231,133.74 and 69,831.72

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Solution

The fourth proportional to 154,087.12, 231,133.74 and 69,831.72 is: 104,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,087.12 : 231,133.74 = 69,831.72 : x
  2. Step 2: Convert to fraction form
    154,087.12/231,133.74 = 69,831.72/x
  3. Step 3: Cross multiply
    154,087.12x = 231,133.74 × 69,831.72
  4. Step 4: Simplify right side
    154,087.12x = 16,140,466,614.23
  5. Step 5: Solve for x
    x = 16,140,466,614.23/154,087.12
  6. Step 6: Final answer
    x = 104,748.97

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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.