Home / 115,638.17-159,580.94-64,652.72

Finding the Fourth Proportional to 115,638.17, 159,580.94 and 64,652.72

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Solution

The fourth proportional to 115,638.17, 159,580.94 and 64,652.72 is: 89,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,638.17 : 159,580.94 = 64,652.72 : x
  2. Step 2: Convert to fraction form
    115,638.17/159,580.94 = 64,652.72/x
  3. Step 3: Cross multiply
    115,638.17x = 159,580.94 × 64,652.72
  4. Step 4: Simplify right side
    115,638.17x = 10,317,340,709.99
  5. Step 5: Solve for x
    x = 10,317,340,709.99/115,638.17
  6. Step 6: Final answer
    x = 89,220.90

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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.