Home / 154,259.94-212,878.11-86,276.64

Finding the Fourth Proportional to 154,259.94, 212,878.11 and 86,276.64

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Solution

The fourth proportional to 154,259.94, 212,878.11 and 86,276.64 is: 119,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,259.94 : 212,878.11 = 86,276.64 : x
  2. Step 2: Convert to fraction form
    154,259.94/212,878.11 = 86,276.64/x
  3. Step 3: Cross multiply
    154,259.94x = 212,878.11 × 86,276.64
  4. Step 4: Simplify right side
    154,259.94x = 18,366,408,060.35
  5. Step 5: Solve for x
    x = 18,366,408,060.35/154,259.94
  6. Step 6: Final answer
    x = 119,061.42

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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.