Home / 207,681.36-312,084.84-112,981.51

Finding the Fourth Proportional to 207,681.36, 312,084.84 and 112,981.51

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Solution

The fourth proportional to 207,681.36, 312,084.84 and 112,981.51 is: 169,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,681.36 : 312,084.84 = 112,981.51 : x
  2. Step 2: Convert to fraction form
    207,681.36/312,084.84 = 112,981.51/x
  3. Step 3: Cross multiply
    207,681.36x = 312,084.84 × 112,981.51
  4. Step 4: Simplify right side
    207,681.36x = 35,259,816,471.31
  5. Step 5: Solve for x
    x = 35,259,816,471.31/207,681.36
  6. Step 6: Final answer
    x = 169,778.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.