Home / 208,121.01-287,176.11-126,406.77

Finding the Fourth Proportional to 208,121.01, 287,176.11 and 126,406.77

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Solution

The fourth proportional to 208,121.01, 287,176.11 and 126,406.77 is: 174,422.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,121.01 : 287,176.11 = 126,406.77 : x
  2. Step 2: Convert to fraction form
    208,121.01/287,176.11 = 126,406.77/x
  3. Step 3: Cross multiply
    208,121.01x = 287,176.11 × 126,406.77
  4. Step 4: Simplify right side
    208,121.01x = 36,301,004,486.26
  5. Step 5: Solve for x
    x = 36,301,004,486.26/208,121.01
  6. Step 6: Final answer
    x = 174,422.58

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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.