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Finding the Fourth Proportional to 117,560, 162,232.80 and 64,568

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Solution

The fourth proportional to 117,560, 162,232.80 and 64,568 is: 89,103.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,560 : 162,232.80 = 64,568 : x
  2. Step 2: Convert to fraction form
    117,560/162,232.80 = 64,568/x
  3. Step 3: Cross multiply
    117,560x = 162,232.80 × 64,568
  4. Step 4: Simplify right side
    117,560x = 10,475,047,430.40
  5. Step 5: Solve for x
    x = 10,475,047,430.40/117,560
  6. Step 6: Final answer
    x = 89,103.84

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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.