Home / 115,256.40-159,055.78-63,579.42

Finding the Fourth Proportional to 115,256.40, 159,055.78 and 63,579.42

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Solution

The fourth proportional to 115,256.40, 159,055.78 and 63,579.42 is: 87,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,256.40 : 159,055.78 = 63,579.42 : x
  2. Step 2: Convert to fraction form
    115,256.40/159,055.78 = 63,579.42/x
  3. Step 3: Cross multiply
    115,256.40x = 159,055.78 × 63,579.42
  4. Step 4: Simplify right side
    115,256.40x = 10,112,674,240.05
  5. Step 5: Solve for x
    x = 10,112,674,240.05/115,256.40
  6. Step 6: Final answer
    x = 87,740.67

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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.