Home / 115,680.87-159,647.74-64,698.35

Finding the Fourth Proportional to 115,680.87, 159,647.74 and 64,698.35

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Solution

The fourth proportional to 115,680.87, 159,647.74 and 64,698.35 is: 89,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,680.87 : 159,647.74 = 64,698.35 : x
  2. Step 2: Convert to fraction form
    115,680.87/159,647.74 = 64,698.35/x
  3. Step 3: Cross multiply
    115,680.87x = 159,647.74 × 64,698.35
  4. Step 4: Simplify right side
    115,680.87x = 10,328,945,030.22
  5. Step 5: Solve for x
    x = 10,328,945,030.22/115,680.87
  6. Step 6: Final answer
    x = 89,288.27

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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.