Home / 209,113.85-288,577.82-118,486.60

Finding the Fourth Proportional to 209,113.85, 288,577.82 and 118,486.60

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Solution

The fourth proportional to 209,113.85, 288,577.82 and 118,486.60 is: 163,511.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,113.85 : 288,577.82 = 118,486.60 : x
  2. Step 2: Convert to fraction form
    209,113.85/288,577.82 = 118,486.60/x
  3. Step 3: Cross multiply
    209,113.85x = 288,577.82 × 118,486.60
  4. Step 4: Simplify right side
    209,113.85x = 34,192,604,301.98
  5. Step 5: Solve for x
    x = 34,192,604,301.98/209,113.85
  6. Step 6: Final answer
    x = 163,511.90

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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.