Home / 128,521,021.73-177,359,219.96-69,783,800.45

Finding the Fourth Proportional to 128,521,021.73, 177,359,219.96 and 69,783,800.45

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Solution

The fourth proportional to 128,521,021.73, 177,359,219.96 and 69,783,800.45 is: 96,301,758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,521,021.73 : 177,359,219.96 = 69,783,800.45 : x
  2. Step 2: Convert to fraction form
    128,521,021.73/177,359,219.96 = 69,783,800.45/x
  3. Step 3: Cross multiply
    128,521,021.73x = 177,359,219.96 × 69,783,800.45
  4. Step 4: Simplify right side
    128,521,021.73x = 12,376,800,412,420,582
  5. Step 5: Solve for x
    x = 12,376,800,412,420,582/128,521,021.73
  6. Step 6: Final answer
    x = 96,301,758.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.