Home / 149,847.84-206,774.64-86,173.20

Finding the Fourth Proportional to 149,847.84, 206,774.64 and 86,173.20

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Solution

The fourth proportional to 149,847.84, 206,774.64 and 86,173.20 is: 118,910.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,847.84 : 206,774.64 = 86,173.20 : x
  2. Step 2: Convert to fraction form
    149,847.84/206,774.64 = 86,173.20/x
  3. Step 3: Cross multiply
    149,847.84x = 206,774.64 × 86,173.20
  4. Step 4: Simplify right side
    149,847.84x = 17,818,432,407.65
  5. Step 5: Solve for x
    x = 17,818,432,407.65/149,847.84
  6. Step 6: Final answer
    x = 118,910.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.