Home / 154,313.10-231,141.60-128,069.10

Finding the Fourth Proportional to 154,313.10, 231,141.60 and 128,069.10

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Solution

The fourth proportional to 154,313.10, 231,141.60 and 128,069.10 is: 191,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,313.10 : 231,141.60 = 128,069.10 : x
  2. Step 2: Convert to fraction form
    154,313.10/231,141.60 = 128,069.10/x
  3. Step 3: Cross multiply
    154,313.10x = 231,141.60 × 128,069.10
  4. Step 4: Simplify right side
    154,313.10x = 29,602,096,684.56
  5. Step 5: Solve for x
    x = 29,602,096,684.56/154,313.10
  6. Step 6: Final answer
    x = 191,831.39

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1.5x scale

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.