Home / 158,142.97-218,235.36-86,521.96

Finding the Fourth Proportional to 158,142.97, 218,235.36 and 86,521.96

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Solution

The fourth proportional to 158,142.97, 218,235.36 and 86,521.96 is: 119,399.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,142.97 : 218,235.36 = 86,521.96 : x
  2. Step 2: Convert to fraction form
    158,142.97/218,235.36 = 86,521.96/x
  3. Step 3: Cross multiply
    158,142.97x = 218,235.36 × 86,521.96
  4. Step 4: Simplify right side
    158,142.97x = 18,882,151,088.51
  5. Step 5: Solve for x
    x = 18,882,151,088.51/158,142.97
  6. Step 6: Final answer
    x = 119,399.24

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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.