Home / 134,979.20-202,468.80-90,742.40

Finding the Fourth Proportional to 134,979.20, 202,468.80 and 90,742.40

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Solution

The fourth proportional to 134,979.20, 202,468.80 and 90,742.40 is: 136,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,979.20 : 202,468.80 = 90,742.40 : x
  2. Step 2: Convert to fraction form
    134,979.20/202,468.80 = 90,742.40/x
  3. Step 3: Cross multiply
    134,979.20x = 202,468.80 × 90,742.40
  4. Step 4: Simplify right side
    134,979.20x = 18,372,504,837.12
  5. Step 5: Solve for x
    x = 18,372,504,837.12/134,979.20
  6. Step 6: Final answer
    x = 136,113.60

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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.