Home / 145,967,759.73-201,436,042.10-78,986,718.18

Finding the Fourth Proportional to 145,967,759.73, 201,436,042.10 and 78,986,718.18

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Solution

The fourth proportional to 145,967,759.73, 201,436,042.10 and 78,986,718.18 is: 109,001,959.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,759.73 : 201,436,042.10 = 78,986,718.18 : x
  2. Step 2: Convert to fraction form
    145,967,759.73/201,436,042.10 = 78,986,718.18/x
  3. Step 3: Cross multiply
    145,967,759.73x = 201,436,042.10 × 78,986,718.18
  4. Step 4: Simplify right side
    145,967,759.73x = 15,910,771,888,252,384
  5. Step 5: Solve for x
    x = 15,910,771,888,252,384/145,967,759.73
  6. Step 6: Final answer
    x = 109,001,959.87

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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.