Home / 158,338.37-218,501.07-86,718.98

Finding the Fourth Proportional to 158,338.37, 218,501.07 and 86,718.98

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Solution

The fourth proportional to 158,338.37, 218,501.07 and 86,718.98 is: 119,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,338.37 : 218,501.07 = 86,718.98 : x
  2. Step 2: Convert to fraction form
    158,338.37/218,501.07 = 86,718.98/x
  3. Step 3: Cross multiply
    158,338.37x = 218,501.07 × 86,718.98
  4. Step 4: Simplify right side
    158,338.37x = 18,948,189,919.31
  5. Step 5: Solve for x
    x = 18,948,189,919.31/158,338.37
  6. Step 6: Final answer
    x = 119,668.97

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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.