Home / 129,208.32-193,814.40-85,117.44

Finding the Fourth Proportional to 129,208.32, 193,814.40 and 85,117.44

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Solution

The fourth proportional to 129,208.32, 193,814.40 and 85,117.44 is: 127,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,208.32 : 193,814.40 = 85,117.44 : x
  2. Step 2: Convert to fraction form
    129,208.32/193,814.40 = 85,117.44/x
  3. Step 3: Cross multiply
    129,208.32x = 193,814.40 × 85,117.44
  4. Step 4: Simplify right side
    129,208.32x = 16,496,985,563.14
  5. Step 5: Solve for x
    x = 16,496,985,563.14/129,208.32
  6. Step 6: Final answer
    x = 127,677.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.