Home / 123,889,660.29-170,989,131.87-71,707,468.50

Finding the Fourth Proportional to 123,889,660.29, 170,989,131.87 and 71,707,468.50

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Solution

The fourth proportional to 123,889,660.29, 170,989,131.87 and 71,707,468.50 is: 98,968,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,889,660.29 : 170,989,131.87 = 71,707,468.50 : x
  2. Step 2: Convert to fraction form
    123,889,660.29/170,989,131.87 = 71,707,468.50/x
  3. Step 3: Cross multiply
    123,889,660.29x = 170,989,131.87 × 71,707,468.50
  4. Step 4: Simplify right side
    123,889,660.29x = 12,261,197,787,410,372
  5. Step 5: Solve for x
    x = 12,261,197,787,410,372/123,889,660.29
  6. Step 6: Final answer
    x = 98,968,693.26

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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.