Home / 109,678.20-164,385-50,432.64

Finding the Fourth Proportional to 109,678.20, 164,385 and 50,432.64

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Solution

The fourth proportional to 109,678.20, 164,385 and 50,432.64 is: 75,588.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,678.20 : 164,385 = 50,432.64 : x
  2. Step 2: Convert to fraction form
    109,678.20/164,385 = 50,432.64/x
  3. Step 3: Cross multiply
    109,678.20x = 164,385 × 50,432.64
  4. Step 4: Simplify right side
    109,678.20x = 8,290,369,526.40
  5. Step 5: Solve for x
    x = 8,290,369,526.40/109,678.20
  6. Step 6: Final answer
    x = 75,588.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.