Home / 209,131.32-288,603.05-113,638.02

Finding the Fourth Proportional to 209,131.32, 288,603.05 and 113,638.02

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Solution

The fourth proportional to 209,131.32, 288,603.05 and 113,638.02 is: 156,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,131.32 : 288,603.05 = 113,638.02 : x
  2. Step 2: Convert to fraction form
    209,131.32/288,603.05 = 113,638.02/x
  3. Step 3: Cross multiply
    209,131.32x = 288,603.05 × 113,638.02
  4. Step 4: Simplify right side
    209,131.32x = 32,796,277,724.95
  5. Step 5: Solve for x
    x = 32,796,277,724.95/209,131.32
  6. Step 6: Final answer
    x = 156,821.45

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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.