Home / 154,115.40-212,677.94-86,135.24

Finding the Fourth Proportional to 154,115.40, 212,677.94 and 86,135.24

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Solution

The fourth proportional to 154,115.40, 212,677.94 and 86,135.24 is: 118,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,115.40 : 212,677.94 = 86,135.24 : x
  2. Step 2: Convert to fraction form
    154,115.40/212,677.94 = 86,135.24/x
  3. Step 3: Cross multiply
    154,115.40x = 212,677.94 × 86,135.24
  4. Step 4: Simplify right side
    154,115.40x = 18,319,065,404.61
  5. Step 5: Solve for x
    x = 18,319,065,404.61/154,115.40
  6. Step 6: Final answer
    x = 118,865.90

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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.