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Finding the Fourth Proportional to 153,093.70, 211,372.40 and 136,910.80

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Solution

The fourth proportional to 153,093.70, 211,372.40 and 136,910.80 is: 189,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,093.70 : 211,372.40 = 136,910.80 : x
  2. Step 2: Convert to fraction form
    153,093.70/211,372.40 = 136,910.80/x
  3. Step 3: Cross multiply
    153,093.70x = 211,372.40 × 136,910.80
  4. Step 4: Simplify right side
    153,093.70x = 28,939,164,381.92
  5. Step 5: Solve for x
    x = 28,939,164,381.92/153,093.70
  6. Step 6: Final answer
    x = 189,029.10

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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.