Home / 131,004,047.20-196,506,070.80-90,189,378.40

Finding the Fourth Proportional to 131,004,047.20, 196,506,070.80 and 90,189,378.40

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Solution

The fourth proportional to 131,004,047.20, 196,506,070.80 and 90,189,378.40 is: 135,284,067.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,004,047.20 : 196,506,070.80 = 90,189,378.40 : x
  2. Step 2: Convert to fraction form
    131,004,047.20/196,506,070.80 = 90,189,378.40/x
  3. Step 3: Cross multiply
    131,004,047.20x = 196,506,070.80 × 90,189,378.40
  4. Step 4: Simplify right side
    131,004,047.20x = 17,722,760,377,278,392
  5. Step 5: Solve for x
    x = 17,722,760,377,278,392/131,004,047.20
  6. Step 6: Final answer
    x = 135,284,067.60

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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.