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Finding the Fourth Proportional to 162,438.48, 224,172.09 and 90,818.48

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Solution

The fourth proportional to 162,438.48, 224,172.09 and 90,818.48 is: 125,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,438.48 : 224,172.09 = 90,818.48 : x
  2. Step 2: Convert to fraction form
    162,438.48/224,172.09 = 90,818.48/x
  3. Step 3: Cross multiply
    162,438.48x = 224,172.09 × 90,818.48
  4. Step 4: Simplify right side
    162,438.48x = 20,358,969,032.65
  5. Step 5: Solve for x
    x = 20,358,969,032.65/162,438.48
  6. Step 6: Final answer
    x = 125,333.41

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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.