Home / 123,844,982.77-170,895,968.10-72,915,782.47

Finding the Fourth Proportional to 123,844,982.77, 170,895,968.10 and 72,915,782.47

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Solution

The fourth proportional to 123,844,982.77, 170,895,968.10 and 72,915,782.47 is: 100,617,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,844,982.77 : 170,895,968.10 = 72,915,782.47 : x
  2. Step 2: Convert to fraction form
    123,844,982.77/170,895,968.10 = 72,915,782.47/x
  3. Step 3: Cross multiply
    123,844,982.77x = 170,895,968.10 × 72,915,782.47
  4. Step 4: Simplify right side
    123,844,982.77x = 12,461,013,234,979,658
  5. Step 5: Solve for x
    x = 12,461,013,234,979,658/123,844,982.77
  6. Step 6: Final answer
    x = 100,617,828.48

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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.