Home / 128,865,987.88-193,317,140-41,398,175.54

Finding the Fourth Proportional to 128,865,987.88, 193,317,140 and 41,398,175.54

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Solution

The fourth proportional to 128,865,987.88, 193,317,140 and 41,398,175.54 is: 62,103,096.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,865,987.88 : 193,317,140 = 41,398,175.54 : x
  2. Step 2: Convert to fraction form
    128,865,987.88/193,317,140 = 41,398,175.54/x
  3. Step 3: Cross multiply
    128,865,987.88x = 193,317,140 × 41,398,175.54
  4. Step 4: Simplify right side
    128,865,987.88x = 8,002,976,896,610,755
  5. Step 5: Solve for x
    x = 8,002,976,896,610,755/128,865,987.88
  6. Step 6: Final answer
    x = 62,103,096.62

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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.