Home / 186,645.90-279,968.85-172,211.70

Finding the Fourth Proportional to 186,645.90, 279,968.85 and 172,211.70

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Solution

The fourth proportional to 186,645.90, 279,968.85 and 172,211.70 is: 258,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,645.90 : 279,968.85 = 172,211.70 : x
  2. Step 2: Convert to fraction form
    186,645.90/279,968.85 = 172,211.70/x
  3. Step 3: Cross multiply
    186,645.90x = 279,968.85 × 172,211.70
  4. Step 4: Simplify right side
    186,645.90x = 48,213,911,605.55
  5. Step 5: Solve for x
    x = 48,213,911,605.55/186,645.90
  6. Step 6: Final answer
    x = 258,317.55

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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.