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Finding the Fourth Proportional to 153,350.69, 211,621.67 and 85,367.54

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Solution

The fourth proportional to 153,350.69, 211,621.67 and 85,367.54 is: 117,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,350.69 : 211,621.67 = 85,367.54 : x
  2. Step 2: Convert to fraction form
    153,350.69/211,621.67 = 85,367.54/x
  3. Step 3: Cross multiply
    153,350.69x = 211,621.67 × 85,367.54
  4. Step 4: Simplify right side
    153,350.69x = 18,065,621,378.59
  5. Step 5: Solve for x
    x = 18,065,621,378.59/153,350.69
  6. Step 6: Final answer
    x = 117,805.93

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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.