Home / 128,303,654.33-177,057,966.32-72,560,020.52

Finding the Fourth Proportional to 128,303,654.33, 177,057,966.32 and 72,560,020.52

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Solution

The fourth proportional to 128,303,654.33, 177,057,966.32 and 72,560,020.52 is: 100,132,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303,654.33 : 177,057,966.32 = 72,560,020.52 : x
  2. Step 2: Convert to fraction form
    128,303,654.33/177,057,966.32 = 72,560,020.52/x
  3. Step 3: Cross multiply
    128,303,654.33x = 177,057,966.32 × 72,560,020.52
  4. Step 4: Simplify right side
    128,303,654.33x = 12,847,329,669,760,612
  5. Step 5: Solve for x
    x = 12,847,329,669,760,612/128,303,654.33
  6. Step 6: Final answer
    x = 100,132,219.43

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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.