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Finding the Fourth Proportional to 162,315.81, 223,991.64 and 90,696.42

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Solution

The fourth proportional to 162,315.81, 223,991.64 and 90,696.42 is: 125,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,315.81 : 223,991.64 = 90,696.42 : x
  2. Step 2: Convert to fraction form
    162,315.81/223,991.64 = 90,696.42/x
  3. Step 3: Cross multiply
    162,315.81x = 223,991.64 × 90,696.42
  4. Step 4: Simplify right side
    162,315.81x = 20,315,240,531.28
  5. Step 5: Solve for x
    x = 20,315,240,531.28/162,315.81
  6. Step 6: Final answer
    x = 125,158.73

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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.