Home / 158,199.16-218,314.96-86,579.20

Finding the Fourth Proportional to 158,199.16, 218,314.96 and 86,579.20

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Solution

The fourth proportional to 158,199.16, 218,314.96 and 86,579.20 is: 119,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,199.16 : 218,314.96 = 86,579.20 : x
  2. Step 2: Convert to fraction form
    158,199.16/218,314.96 = 86,579.20/x
  3. Step 3: Cross multiply
    158,199.16x = 218,314.96 × 86,579.20
  4. Step 4: Simplify right side
    158,199.16x = 18,901,534,584.83
  5. Step 5: Solve for x
    x = 18,901,534,584.83/158,199.16
  6. Step 6: Final answer
    x = 119,479.36

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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.