Home / 154,327.40-212,970.66-87,261.80

Finding the Fourth Proportional to 154,327.40, 212,970.66 and 87,261.80

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Solution

The fourth proportional to 154,327.40, 212,970.66 and 87,261.80 is: 120,420.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,327.40 : 212,970.66 = 87,261.80 : x
  2. Step 2: Convert to fraction form
    154,327.40/212,970.66 = 87,261.80/x
  3. Step 3: Cross multiply
    154,327.40x = 212,970.66 × 87,261.80
  4. Step 4: Simplify right side
    154,327.40x = 18,584,203,138.79
  5. Step 5: Solve for x
    x = 18,584,203,138.79/154,327.40
  6. Step 6: Final answer
    x = 120,420.63

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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.