Home / 154,289.41-212,909.37-86,294.61

Finding the Fourth Proportional to 154,289.41, 212,909.37 and 86,294.61

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Solution

The fourth proportional to 154,289.41, 212,909.37 and 86,294.61 is: 119,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,289.41 : 212,909.37 = 86,294.61 : x
  2. Step 2: Convert to fraction form
    154,289.41/212,909.37 = 86,294.61/x
  3. Step 3: Cross multiply
    154,289.41x = 212,909.37 × 86,294.61
  4. Step 4: Simplify right side
    154,289.41x = 18,372,931,049.50
  5. Step 5: Solve for x
    x = 18,372,931,049.50/154,289.41
  6. Step 6: Final answer
    x = 119,080.96

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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.