Home / 142,131,760.20-213,197,640.30-128,952,023.40

Finding the Fourth Proportional to 142,131,760.20, 213,197,640.30 and 128,952,023.40

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Solution

The fourth proportional to 142,131,760.20, 213,197,640.30 and 128,952,023.40 is: 193,428,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,131,760.20 : 213,197,640.30 = 128,952,023.40 : x
  2. Step 2: Convert to fraction form
    142,131,760.20/213,197,640.30 = 128,952,023.40/x
  3. Step 3: Cross multiply
    142,131,760.20x = 213,197,640.30 × 128,952,023.40
  4. Step 4: Simplify right side
    142,131,760.20x = 27,492,267,100,790,384
  5. Step 5: Solve for x
    x = 27,492,267,100,790,384/142,131,760.20
  6. Step 6: Final answer
    x = 193,428,035.10

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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.