Home / 190,731.51-286,097.40-66,072.51

Finding the Fourth Proportional to 190,731.51, 286,097.40 and 66,072.51

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Solution

The fourth proportional to 190,731.51, 286,097.40 and 66,072.51 is: 99,108.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,731.51 : 286,097.40 = 66,072.51 : x
  2. Step 2: Convert to fraction form
    190,731.51/286,097.40 = 66,072.51/x
  3. Step 3: Cross multiply
    190,731.51x = 286,097.40 × 66,072.51
  4. Step 4: Simplify right side
    190,731.51x = 18,903,173,322.47
  5. Step 5: Solve for x
    x = 18,903,173,322.47/190,731.51
  6. Step 6: Final answer
    x = 99,108.81

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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.