Home / 208,578.36-287,840.12-113,085.30

Finding the Fourth Proportional to 208,578.36, 287,840.12 and 113,085.30

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Solution

The fourth proportional to 208,578.36, 287,840.12 and 113,085.30 is: 156,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,578.36 : 287,840.12 = 113,085.30 : x
  2. Step 2: Convert to fraction form
    208,578.36/287,840.12 = 113,085.30/x
  3. Step 3: Cross multiply
    208,578.36x = 287,840.12 × 113,085.30
  4. Step 4: Simplify right side
    208,578.36x = 32,550,485,165.75
  5. Step 5: Solve for x
    x = 32,550,485,165.75/208,578.36
  6. Step 6: Final answer
    x = 156,058.79

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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.