Home / 128,305,765.40-192,458,648.10-107,048,125.40

Finding the Fourth Proportional to 128,305,765.40, 192,458,648.10 and 107,048,125.40

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Solution

The fourth proportional to 128,305,765.40, 192,458,648.10 and 107,048,125.40 is: 160,572,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,305,765.40 : 192,458,648.10 = 107,048,125.40 : x
  2. Step 2: Convert to fraction form
    128,305,765.40/192,458,648.10 = 107,048,125.40/x
  3. Step 3: Cross multiply
    128,305,765.40x = 192,458,648.10 × 107,048,125.40
  4. Step 4: Simplify right side
    128,305,765.40x = 20,602,337,496,123,272
  5. Step 5: Solve for x
    x = 20,602,337,496,123,272/128,305,765.40
  6. Step 6: Final answer
    x = 160,572,188.10

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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.