Home / 190,467.12-285,759.90-78,156.48

Finding the Fourth Proportional to 190,467.12, 285,759.90 and 78,156.48

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Solution

The fourth proportional to 190,467.12, 285,759.90 and 78,156.48 is: 117,259.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,467.12 : 285,759.90 = 78,156.48 : x
  2. Step 2: Convert to fraction form
    190,467.12/285,759.90 = 78,156.48/x
  3. Step 3: Cross multiply
    190,467.12x = 285,759.90 × 78,156.48
  4. Step 4: Simplify right side
    190,467.12x = 22,333,987,909.15
  5. Step 5: Solve for x
    x = 22,333,987,909.15/190,467.12
  6. Step 6: Final answer
    x = 117,259.02

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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.