Home / 208,077.18-287,055.38-121,992.61

Finding the Fourth Proportional to 208,077.18, 287,055.38 and 121,992.61

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Solution

The fourth proportional to 208,077.18, 287,055.38 and 121,992.61 is: 168,296.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,077.18 : 287,055.38 = 121,992.61 : x
  2. Step 2: Convert to fraction form
    208,077.18/287,055.38 = 121,992.61/x
  3. Step 3: Cross multiply
    208,077.18x = 287,055.38 × 121,992.61
  4. Step 4: Simplify right side
    208,077.18x = 35,018,634,410.78
  5. Step 5: Solve for x
    x = 35,018,634,410.78/208,077.18
  6. Step 6: Final answer
    x = 168,296.37

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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.