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Finding the Fourth Proportional to 162,162.40, 243,128.40 and 73,458.40

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Solution

The fourth proportional to 162,162.40, 243,128.40 and 73,458.40 is: 110,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,162.40 : 243,128.40 = 73,458.40 : x
  2. Step 2: Convert to fraction form
    162,162.40/243,128.40 = 73,458.40/x
  3. Step 3: Cross multiply
    162,162.40x = 243,128.40 × 73,458.40
  4. Step 4: Simplify right side
    162,162.40x = 17,859,823,258.56
  5. Step 5: Solve for x
    x = 17,859,823,258.56/162,162.40
  6. Step 6: Final answer
    x = 110,135.42

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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.