Home / 142,131,738.70-213,197,608.05-128,952,001.90

Finding the Fourth Proportional to 142,131,738.70, 213,197,608.05 and 128,952,001.90

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Solution

The fourth proportional to 142,131,738.70, 213,197,608.05 and 128,952,001.90 is: 193,428,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,131,738.70 : 213,197,608.05 = 128,952,001.90 : x
  2. Step 2: Convert to fraction form
    142,131,738.70/213,197,608.05 = 128,952,001.90/x
  3. Step 3: Cross multiply
    142,131,738.70x = 213,197,608.05 × 128,952,001.90
  4. Step 4: Simplify right side
    142,131,738.70x = 27,492,258,358,339,060
  5. Step 5: Solve for x
    x = 27,492,258,358,339,060/142,131,738.70
  6. Step 6: Final answer
    x = 193,428,002.85

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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.