Home / 154,274.90-212,919.08-86,295.65

Finding the Fourth Proportional to 154,274.90, 212,919.08 and 86,295.65

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Solution

The fourth proportional to 154,274.90, 212,919.08 and 86,295.65 is: 119,099.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,274.90 : 212,919.08 = 86,295.65 : x
  2. Step 2: Convert to fraction form
    154,274.90/212,919.08 = 86,295.65/x
  3. Step 3: Cross multiply
    154,274.90x = 212,919.08 × 86,295.65
  4. Step 4: Simplify right side
    154,274.90x = 18,373,988,909.93
  5. Step 5: Solve for x
    x = 18,373,988,909.93/154,274.90
  6. Step 6: Final answer
    x = 119,099.02

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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.