Home / 109,423.90-164,135.85-89,983.90

Finding the Fourth Proportional to 109,423.90, 164,135.85 and 89,983.90

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Solution

The fourth proportional to 109,423.90, 164,135.85 and 89,983.90 is: 134,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,423.90 : 164,135.85 = 89,983.90 : x
  2. Step 2: Convert to fraction form
    109,423.90/164,135.85 = 89,983.90/x
  3. Step 3: Cross multiply
    109,423.90x = 164,135.85 × 89,983.90
  4. Step 4: Simplify right side
    109,423.90x = 14,769,583,912.82
  5. Step 5: Solve for x
    x = 14,769,583,912.82/109,423.90
  6. Step 6: Final answer
    x = 134,975.85

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1.5x scale

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.