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Finding the Fourth Proportional to 153,751.57, 212,104.83 and 100,016.98

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Solution

The fourth proportional to 153,751.57, 212,104.83 and 100,016.98 is: 137,976.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,751.57 : 212,104.83 = 100,016.98 : x
  2. Step 2: Convert to fraction form
    153,751.57/212,104.83 = 100,016.98/x
  3. Step 3: Cross multiply
    153,751.57x = 212,104.83 × 100,016.98
  4. Step 4: Simplify right side
    153,751.57x = 21,214,083,822.22
  5. Step 5: Solve for x
    x = 21,214,083,822.22/153,751.57
  6. Step 6: Final answer
    x = 137,976.37

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1.5x scale

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.