Home / 208,618.77-287,894.07-113,125.47

Finding the Fourth Proportional to 208,618.77, 287,894.07 and 113,125.47

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Solution

The fourth proportional to 208,618.77, 287,894.07 and 113,125.47 is: 156,113.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,618.77 : 287,894.07 = 113,125.47 : x
  2. Step 2: Convert to fraction form
    208,618.77/287,894.07 = 113,125.47/x
  3. Step 3: Cross multiply
    208,618.77x = 287,894.07 × 113,125.47
  4. Step 4: Simplify right side
    208,618.77x = 32,568,149,973.87
  5. Step 5: Solve for x
    x = 32,568,149,973.87/208,618.77
  6. Step 6: Final answer
    x = 156,113.23

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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.