Home / 208,623.39-287,897.76-113,128.94

Finding the Fourth Proportional to 208,623.39, 287,897.76 and 113,128.94

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Solution

The fourth proportional to 208,623.39, 287,897.76 and 113,128.94 is: 156,116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,623.39 : 287,897.76 = 113,128.94 : x
  2. Step 2: Convert to fraction form
    208,623.39/287,897.76 = 113,128.94/x
  3. Step 3: Cross multiply
    208,623.39x = 287,897.76 × 113,128.94
  4. Step 4: Simplify right side
    208,623.39x = 32,569,568,417.17
  5. Step 5: Solve for x
    x = 32,569,568,417.17/208,623.39
  6. Step 6: Final answer
    x = 156,116.57

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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.