Home / 154,120,418.12-212,717,075.28-91,431,312.54

Finding the Fourth Proportional to 154,120,418.12, 212,717,075.28 and 91,431,312.54

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Solution

The fourth proportional to 154,120,418.12, 212,717,075.28 and 91,431,312.54 is: 126,193,541.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,120,418.12 : 212,717,075.28 = 91,431,312.54 : x
  2. Step 2: Convert to fraction form
    154,120,418.12/212,717,075.28 = 91,431,312.54/x
  3. Step 3: Cross multiply
    154,120,418.12x = 212,717,075.28 × 91,431,312.54
  4. Step 4: Simplify right side
    154,120,418.12x = 19,449,001,392,520,388
  5. Step 5: Solve for x
    x = 19,449,001,392,520,388/154,120,418.12
  6. Step 6: Final answer
    x = 126,193,541.59

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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.