Home / 154,120,419.80-212,717,077.61-91,431,314.22

Finding the Fourth Proportional to 154,120,419.80, 212,717,077.61 and 91,431,314.22

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Solution

The fourth proportional to 154,120,419.80, 212,717,077.61 and 91,431,314.22 is: 126,193,543.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,120,419.80 : 212,717,077.61 = 91,431,314.22 : x
  2. Step 2: Convert to fraction form
    154,120,419.80/212,717,077.61 = 91,431,314.22/x
  3. Step 3: Cross multiply
    154,120,419.80x = 212,717,077.61 × 91,431,314.22
  4. Step 4: Simplify right side
    154,120,419.80x = 19,449,001,962,462,880
  5. Step 5: Solve for x
    x = 19,449,001,962,462,880/154,120,419.80
  6. Step 6: Final answer
    x = 126,193,543.91

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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.