Home / 210,668.04-290,721.88-115,174.72

Finding the Fourth Proportional to 210,668.04, 290,721.88 and 115,174.72

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Solution

The fourth proportional to 210,668.04, 290,721.88 and 115,174.72 is: 158,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,668.04 : 290,721.88 = 115,174.72 : x
  2. Step 2: Convert to fraction form
    210,668.04/290,721.88 = 115,174.72/x
  3. Step 3: Cross multiply
    210,668.04x = 290,721.88 × 115,174.72
  4. Step 4: Simplify right side
    210,668.04x = 33,483,811,126.87
  5. Step 5: Solve for x
    x = 33,483,811,126.87/210,668.04
  6. Step 6: Final answer
    x = 158,941.11

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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.