Home / 128,403,693.36-192,616,737.48-36,288,393.84

Finding the Fourth Proportional to 128,403,693.36, 192,616,737.48 and 36,288,393.84

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Solution

The fourth proportional to 128,403,693.36, 192,616,737.48 and 36,288,393.84 is: 54,435,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,403,693.36 : 192,616,737.48 = 36,288,393.84 : x
  2. Step 2: Convert to fraction form
    128,403,693.36/192,616,737.48 = 36,288,393.84/x
  3. Step 3: Cross multiply
    128,403,693.36x = 192,616,737.48 × 36,288,393.84
  4. Step 4: Simplify right side
    128,403,693.36x = 6,989,752,029,850,129
  5. Step 5: Solve for x
    x = 6,989,752,029,850,129/128,403,693.36
  6. Step 6: Final answer
    x = 54,435,755.29

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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.