Home / 190,752.12-286,226.60-78,515.28

Finding the Fourth Proportional to 190,752.12, 286,226.60 and 78,515.28

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Solution

The fourth proportional to 190,752.12, 286,226.60 and 78,515.28 is: 117,813.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,752.12 : 286,226.60 = 78,515.28 : x
  2. Step 2: Convert to fraction form
    190,752.12/286,226.60 = 78,515.28/x
  3. Step 3: Cross multiply
    190,752.12x = 286,226.60 × 78,515.28
  4. Step 4: Simplify right side
    190,752.12x = 22,473,161,642.45
  5. Step 5: Solve for x
    x = 22,473,161,642.45/190,752.12
  6. Step 6: Final answer
    x = 117,813.43

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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.