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Finding the Fourth Proportional to 115,358.40, 159,157.32 and 64,362.87

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Solution

The fourth proportional to 115,358.40, 159,157.32 and 64,362.87 is: 88,799.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,358.40 : 159,157.32 = 64,362.87 : x
  2. Step 2: Convert to fraction form
    115,358.40/159,157.32 = 64,362.87/x
  3. Step 3: Cross multiply
    115,358.40x = 159,157.32 × 64,362.87
  4. Step 4: Simplify right side
    115,358.40x = 10,243,821,896.71
  5. Step 5: Solve for x
    x = 10,243,821,896.71/115,358.40
  6. Step 6: Final answer
    x = 88,799.97

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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.