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Finding the Fourth Proportional to 162,420.79, 224,142.29 and 90,804.73

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Solution

The fourth proportional to 162,420.79, 224,142.29 and 90,804.73 is: 125,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,420.79 : 224,142.29 = 90,804.73 : x
  2. Step 2: Convert to fraction form
    162,420.79/224,142.29 = 90,804.73/x
  3. Step 3: Cross multiply
    162,420.79x = 224,142.29 × 90,804.73
  4. Step 4: Simplify right side
    162,420.79x = 20,353,180,125.03
  5. Step 5: Solve for x
    x = 20,353,180,125.03/162,420.79
  6. Step 6: Final answer
    x = 125,311.42

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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.