Home / 115,217.75-159,000.90-64,916.75

Finding the Fourth Proportional to 115,217.75, 159,000.90 and 64,916.75

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Solution

The fourth proportional to 115,217.75, 159,000.90 and 64,916.75 is: 89,585.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,217.75 : 159,000.90 = 64,916.75 : x
  2. Step 2: Convert to fraction form
    115,217.75/159,000.90 = 64,916.75/x
  3. Step 3: Cross multiply
    115,217.75x = 159,000.90 × 64,916.75
  4. Step 4: Simplify right side
    115,217.75x = 10,321,821,675.08
  5. Step 5: Solve for x
    x = 10,321,821,675.08/115,217.75
  6. Step 6: Final answer
    x = 89,585.34

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1.5x scale

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.