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Finding the Fourth Proportional to 153,534.96, 211,879.76 and 89,874.09

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Solution

The fourth proportional to 153,534.96, 211,879.76 and 89,874.09 is: 124,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,534.96 : 211,879.76 = 89,874.09 : x
  2. Step 2: Convert to fraction form
    153,534.96/211,879.76 = 89,874.09/x
  3. Step 3: Cross multiply
    153,534.96x = 211,879.76 × 89,874.09
  4. Step 4: Simplify right side
    153,534.96x = 19,042,500,170.05
  5. Step 5: Solve for x
    x = 19,042,500,170.05/153,534.96
  6. Step 6: Final answer
    x = 124,027.13

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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.