Home / 133,017.12-198,479.16-128,507.04

Finding the Fourth Proportional to 133,017.12, 198,479.16 and 128,507.04

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Solution

The fourth proportional to 133,017.12, 198,479.16 and 128,507.04 is: 191,749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,017.12 : 198,479.16 = 128,507.04 : x
  2. Step 2: Convert to fraction form
    133,017.12/198,479.16 = 128,507.04/x
  3. Step 3: Cross multiply
    133,017.12x = 198,479.16 × 128,507.04
  4. Step 4: Simplify right side
    133,017.12x = 25,505,969,353.29
  5. Step 5: Solve for x
    x = 25,505,969,353.29/133,017.12
  6. Step 6: Final answer
    x = 191,749.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.