Home / 158,542.08-218,783.32-86,919.65

Finding the Fourth Proportional to 158,542.08, 218,783.32 and 86,919.65

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Solution

The fourth proportional to 158,542.08, 218,783.32 and 86,919.65 is: 119,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,542.08 : 218,783.32 = 86,919.65 : x
  2. Step 2: Convert to fraction form
    158,542.08/218,783.32 = 86,919.65/x
  3. Step 3: Cross multiply
    158,542.08x = 218,783.32 × 86,919.65
  4. Step 4: Simplify right side
    158,542.08x = 19,016,569,600.24
  5. Step 5: Solve for x
    x = 19,016,569,600.24/158,542.08
  6. Step 6: Final answer
    x = 119,946.51

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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.