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Finding the Fourth Proportional to 153,633.54, 211,852.62 and 121,314.54

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Solution

The fourth proportional to 153,633.54, 211,852.62 and 121,314.54 is: 167,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,633.54 : 211,852.62 = 121,314.54 : x
  2. Step 2: Convert to fraction form
    153,633.54/211,852.62 = 121,314.54/x
  3. Step 3: Cross multiply
    153,633.54x = 211,852.62 × 121,314.54
  4. Step 4: Simplify right side
    153,633.54x = 25,700,803,143.09
  5. Step 5: Solve for x
    x = 25,700,803,143.09/153,633.54
  6. Step 6: Final answer
    x = 167,286.41

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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.