Home / 208,421.16-287,516.34-136,791.24

Finding the Fourth Proportional to 208,421.16, 287,516.34 and 136,791.24

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Solution

The fourth proportional to 208,421.16, 287,516.34 and 136,791.24 is: 188,703.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,421.16 : 287,516.34 = 136,791.24 : x
  2. Step 2: Convert to fraction form
    208,421.16/287,516.34 = 136,791.24/x
  3. Step 3: Cross multiply
    208,421.16x = 287,516.34 × 136,791.24
  4. Step 4: Simplify right side
    208,421.16x = 39,329,716,668.86
  5. Step 5: Solve for x
    x = 39,329,716,668.86/208,421.16
  6. Step 6: Final answer
    x = 188,703.09

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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.