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Finding the Fourth Proportional to 117,400.59, 162,009.14 and 65,717.67

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Solution

The fourth proportional to 117,400.59, 162,009.14 and 65,717.67 is: 90,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,400.59 : 162,009.14 = 65,717.67 : x
  2. Step 2: Convert to fraction form
    117,400.59/162,009.14 = 65,717.67/x
  3. Step 3: Cross multiply
    117,400.59x = 162,009.14 × 65,717.67
  4. Step 4: Simplify right side
    117,400.59x = 10,646,863,363.80
  5. Step 5: Solve for x
    x = 10,646,863,363.80/117,400.59
  6. Step 6: Final answer
    x = 90,688.33

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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.