Home / 154,120,425.28-212,717,085.18-91,431,319.72

Finding the Fourth Proportional to 154,120,425.28, 212,717,085.18 and 91,431,319.72

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Solution

The fourth proportional to 154,120,425.28, 212,717,085.18 and 91,431,319.72 is: 126,193,551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,120,425.28 : 212,717,085.18 = 91,431,319.72 : x
  2. Step 2: Convert to fraction form
    154,120,425.28/212,717,085.18 = 91,431,319.72/x
  3. Step 3: Cross multiply
    154,120,425.28x = 212,717,085.18 × 91,431,319.72
  4. Step 4: Simplify right side
    154,120,425.28x = 19,449,003,824,999,056
  5. Step 5: Solve for x
    x = 19,449,003,824,999,056/154,120,425.28
  6. Step 6: Final answer
    x = 126,193,551.50

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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.