Home / 158,017.32-218,067.78-86,400.36

Finding the Fourth Proportional to 158,017.32, 218,067.78 and 86,400.36

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Solution

The fourth proportional to 158,017.32, 218,067.78 and 86,400.36 is: 119,234.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,017.32 : 218,067.78 = 86,400.36 : x
  2. Step 2: Convert to fraction form
    158,017.32/218,067.78 = 86,400.36/x
  3. Step 3: Cross multiply
    158,017.32x = 218,067.78 × 86,400.36
  4. Step 4: Simplify right side
    158,017.32x = 18,841,134,696.40
  5. Step 5: Solve for x
    x = 18,841,134,696.40/158,017.32
  6. Step 6: Final answer
    x = 119,234.62

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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.