Home / 154,199.21-212,730.45-120,148.58

Finding the Fourth Proportional to 154,199.21, 212,730.45 and 120,148.58

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Solution

The fourth proportional to 154,199.21, 212,730.45 and 120,148.58 is: 165,754.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,199.21 : 212,730.45 = 120,148.58 : x
  2. Step 2: Convert to fraction form
    154,199.21/212,730.45 = 120,148.58/x
  3. Step 3: Cross multiply
    154,199.21x = 212,730.45 × 120,148.58
  4. Step 4: Simplify right side
    154,199.21x = 25,559,261,490.26
  5. Step 5: Solve for x
    x = 25,559,261,490.26/154,199.21
  6. Step 6: Final answer
    x = 165,754.81

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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.