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Finding the Fourth Proportional to 211,756.65, 292,140.84 and 121,063.89

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Solution

The fourth proportional to 211,756.65, 292,140.84 and 121,063.89 is: 167,020.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,756.65 : 292,140.84 = 121,063.89 : x
  2. Step 2: Convert to fraction form
    211,756.65/292,140.84 = 121,063.89/x
  3. Step 3: Cross multiply
    211,756.65x = 292,140.84 × 121,063.89
  4. Step 4: Simplify right side
    211,756.65x = 35,367,706,518.27
  5. Step 5: Solve for x
    x = 35,367,706,518.27/211,756.65
  6. Step 6: Final answer
    x = 167,020.52

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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.