Home / 190,281.18-285,435.04-76,429.02

Finding the Fourth Proportional to 190,281.18, 285,435.04 and 76,429.02

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Solution

The fourth proportional to 190,281.18, 285,435.04 and 76,429.02 is: 114,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,281.18 : 285,435.04 = 76,429.02 : x
  2. Step 2: Convert to fraction form
    190,281.18/285,435.04 = 76,429.02/x
  3. Step 3: Cross multiply
    190,281.18x = 285,435.04 × 76,429.02
  4. Step 4: Simplify right side
    190,281.18x = 21,815,520,380.86
  5. Step 5: Solve for x
    x = 21,815,520,380.86/190,281.18
  6. Step 6: Final answer
    x = 114,648.86

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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.