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Finding the Fourth Proportional to 162,138, 243,208.08 and 51,330

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Solution

The fourth proportional to 162,138, 243,208.08 and 51,330 is: 76,995.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,138 : 243,208.08 = 51,330 : x
  2. Step 2: Convert to fraction form
    162,138/243,208.08 = 51,330/x
  3. Step 3: Cross multiply
    162,138x = 243,208.08 × 51,330
  4. Step 4: Simplify right side
    162,138x = 12,483,870,746.40
  5. Step 5: Solve for x
    x = 12,483,870,746.40/162,138
  6. Step 6: Final answer
    x = 76,995.34

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.