Home / 154,276.40-212,921.15-86,297.15

Finding the Fourth Proportional to 154,276.40, 212,921.15 and 86,297.15

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Solution

The fourth proportional to 154,276.40, 212,921.15 and 86,297.15 is: 119,101.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,276.40 : 212,921.15 = 86,297.15 : x
  2. Step 2: Convert to fraction form
    154,276.40/212,921.15 = 86,297.15/x
  3. Step 3: Cross multiply
    154,276.40x = 212,921.15 × 86,297.15
  4. Step 4: Simplify right side
    154,276.40x = 18,374,486,923.63
  5. Step 5: Solve for x
    x = 18,374,486,923.63/154,276.40
  6. Step 6: Final answer
    x = 119,101.09

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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.