Home / 112,818,322.92-155,721,570.66-66,435,481.05

Finding the Fourth Proportional to 112,818,322.92, 155,721,570.66 and 66,435,481.05

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Solution

The fourth proportional to 112,818,322.92, 155,721,570.66 and 66,435,481.05 is: 91,699,975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,818,322.92 : 155,721,570.66 = 66,435,481.05 : x
  2. Step 2: Convert to fraction form
    112,818,322.92/155,721,570.66 = 66,435,481.05/x
  3. Step 3: Cross multiply
    112,818,322.92x = 155,721,570.66 × 66,435,481.05
  4. Step 4: Simplify right side
    112,818,322.92x = 10,345,437,456,658,666
  5. Step 5: Solve for x
    x = 10,345,437,456,658,666/112,818,322.92
  6. Step 6: Final answer
    x = 91,699,975.58

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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.