Home / 123,844,976.91-170,895,960-72,915,776.64

Finding the Fourth Proportional to 123,844,976.91, 170,895,960 and 72,915,776.64

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Solution

The fourth proportional to 123,844,976.91, 170,895,960 and 72,915,776.64 is: 100,617,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,844,976.91 : 170,895,960 = 72,915,776.64 : x
  2. Step 2: Convert to fraction form
    123,844,976.91/170,895,960 = 72,915,776.64/x
  3. Step 3: Cross multiply
    123,844,976.91x = 170,895,960 × 72,915,776.64
  4. Step 4: Simplify right side
    123,844,976.91x = 12,461,011,648,038,374
  5. Step 5: Solve for x
    x = 12,461,011,648,038,374/123,844,976.91
  6. Step 6: Final answer
    x = 100,617,820.43

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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.