Home / 208,200.06-287,245.44-135,569.79

Finding the Fourth Proportional to 208,200.06, 287,245.44 and 135,569.79

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Solution

The fourth proportional to 208,200.06, 287,245.44 and 135,569.79 is: 187,040.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,200.06 : 287,245.44 = 135,569.79 : x
  2. Step 2: Convert to fraction form
    208,200.06/287,245.44 = 135,569.79/x
  3. Step 3: Cross multiply
    208,200.06x = 287,245.44 × 135,569.79
  4. Step 4: Simplify right side
    208,200.06x = 38,941,803,979.26
  5. Step 5: Solve for x
    x = 38,941,803,979.26/208,200.06
  6. Step 6: Final answer
    x = 187,040.31

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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.