Home / 154,983.83-213,868.77-86,994.47

Finding the Fourth Proportional to 154,983.83, 213,868.77 and 86,994.47

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Solution

The fourth proportional to 154,983.83, 213,868.77 and 86,994.47 is: 120,047.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,983.83 : 213,868.77 = 86,994.47 : x
  2. Step 2: Convert to fraction form
    154,983.83/213,868.77 = 86,994.47/x
  3. Step 3: Cross multiply
    154,983.83x = 213,868.77 × 86,994.47
  4. Step 4: Simplify right side
    154,983.83x = 18,605,398,791.39
  5. Step 5: Solve for x
    x = 18,605,398,791.39/154,983.83
  6. Step 6: Final answer
    x = 120,047.36

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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.