Home / 190,933.51-286,165.05-78,543.58

Finding the Fourth Proportional to 190,933.51, 286,165.05 and 78,543.58

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Solution

The fourth proportional to 190,933.51, 286,165.05 and 78,543.58 is: 117,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,933.51 : 286,165.05 = 78,543.58 : x
  2. Step 2: Convert to fraction form
    190,933.51/286,165.05 = 78,543.58/x
  3. Step 3: Cross multiply
    190,933.51x = 286,165.05 × 78,543.58
  4. Step 4: Simplify right side
    190,933.51x = 22,476,427,497.88
  5. Step 5: Solve for x
    x = 22,476,427,497.88/190,933.51
  6. Step 6: Final answer
    x = 117,718.61

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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.