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Finding the Fourth Proportional to 162,816.80, 224,683.84 and 90,212.64

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Solution

The fourth proportional to 162,816.80, 224,683.84 and 90,212.64 is: 124,491.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,816.80 : 224,683.84 = 90,212.64 : x
  2. Step 2: Convert to fraction form
    162,816.80/224,683.84 = 90,212.64/x
  3. Step 3: Cross multiply
    162,816.80x = 224,683.84 × 90,212.64
  4. Step 4: Simplify right side
    162,816.80x = 20,269,322,371.74
  5. Step 5: Solve for x
    x = 20,269,322,371.74/162,816.80
  6. Step 6: Final answer
    x = 124,491.59

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1.5x scale

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.