Home / 154,284.41-212,902.47-86,289.61

Finding the Fourth Proportional to 154,284.41, 212,902.47 and 86,289.61

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Solution

The fourth proportional to 154,284.41, 212,902.47 and 86,289.61 is: 119,074.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,284.41 : 212,902.47 = 86,289.61 : x
  2. Step 2: Convert to fraction form
    154,284.41/212,902.47 = 86,289.61/x
  3. Step 3: Cross multiply
    154,284.41x = 212,902.47 × 86,289.61
  4. Step 4: Simplify right side
    154,284.41x = 18,371,270,672.89
  5. Step 5: Solve for x
    x = 18,371,270,672.89/154,284.41
  6. Step 6: Final answer
    x = 119,074.06

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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.