Home / 111,978,990.75-168,034,621.01-47,278,607.79

Finding the Fourth Proportional to 111,978,990.75, 168,034,621.01 and 47,278,607.79

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Solution

The fourth proportional to 111,978,990.75, 168,034,621.01 and 47,278,607.79 is: 70,945,834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,978,990.75 : 168,034,621.01 = 47,278,607.79 : x
  2. Step 2: Convert to fraction form
    111,978,990.75/168,034,621.01 = 47,278,607.79/x
  3. Step 3: Cross multiply
    111,978,990.75x = 168,034,621.01 × 47,278,607.79
  4. Step 4: Simplify right side
    111,978,990.75x = 7,944,442,941,636,690
  5. Step 5: Solve for x
    x = 7,944,442,941,636,690/111,978,990.75
  6. Step 6: Final answer
    x = 70,945,834.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.