Home / 190,934.51-286,166.55-78,544.58

Finding the Fourth Proportional to 190,934.51, 286,166.55 and 78,544.58

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Solution

The fourth proportional to 190,934.51, 286,166.55 and 78,544.58 is: 117,720.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,934.51 : 286,166.55 = 78,544.58 : x
  2. Step 2: Convert to fraction form
    190,934.51/286,166.55 = 78,544.58/x
  3. Step 3: Cross multiply
    190,934.51x = 286,166.55 × 78,544.58
  4. Step 4: Simplify right side
    190,934.51x = 22,476,831,479.80
  5. Step 5: Solve for x
    x = 22,476,831,479.80/190,934.51
  6. Step 6: Final answer
    x = 117,720.11

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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.