Home / 158,389.38-218,582.78-86,769.38

Finding the Fourth Proportional to 158,389.38, 218,582.78 and 86,769.38

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Solution

The fourth proportional to 158,389.38, 218,582.78 and 86,769.38 is: 119,744.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,389.38 : 218,582.78 = 86,769.38 : x
  2. Step 2: Convert to fraction form
    158,389.38/218,582.78 = 86,769.38/x
  3. Step 3: Cross multiply
    158,389.38x = 218,582.78 × 86,769.38
  4. Step 4: Simplify right side
    158,389.38x = 18,966,292,299.28
  5. Step 5: Solve for x
    x = 18,966,292,299.28/158,389.38
  6. Step 6: Final answer
    x = 119,744.72

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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.