Home / 140,679,986.20-211,019,979.30-128,138,853.40

Finding the Fourth Proportional to 140,679,986.20, 211,019,979.30 and 128,138,853.40

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Solution

The fourth proportional to 140,679,986.20, 211,019,979.30 and 128,138,853.40 is: 192,208,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,679,986.20 : 211,019,979.30 = 128,138,853.40 : x
  2. Step 2: Convert to fraction form
    140,679,986.20/211,019,979.30 = 128,138,853.40/x
  3. Step 3: Cross multiply
    140,679,986.20x = 211,019,979.30 × 128,138,853.40
  4. Step 4: Simplify right side
    140,679,986.20x = 27,039,858,191,993,736
  5. Step 5: Solve for x
    x = 27,039,858,191,993,736/140,679,986.20
  6. Step 6: Final answer
    x = 192,208,280.10

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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.