Home / 128,319,232.88-192,401,979.60-40,842,962.12

Finding the Fourth Proportional to 128,319,232.88, 192,401,979.60 and 40,842,962.12

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Solution

The fourth proportional to 128,319,232.88, 192,401,979.60 and 40,842,962.12 is: 61,239,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,319,232.88 : 192,401,979.60 = 40,842,962.12 : x
  2. Step 2: Convert to fraction form
    128,319,232.88/192,401,979.60 = 40,842,962.12/x
  3. Step 3: Cross multiply
    128,319,232.88x = 192,401,979.60 × 40,842,962.12
  4. Step 4: Simplify right side
    128,319,232.88x = 7,858,266,764,615,812
  5. Step 5: Solve for x
    x = 7,858,266,764,615,812/128,319,232.88
  6. Step 6: Final answer
    x = 61,239,976.18

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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.