Home / 129,205.80-193,679.10-59,135.40

Finding the Fourth Proportional to 129,205.80, 193,679.10 and 59,135.40

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Solution

The fourth proportional to 129,205.80, 193,679.10 and 59,135.40 is: 88,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,205.80 : 193,679.10 = 59,135.40 : x
  2. Step 2: Convert to fraction form
    129,205.80/193,679.10 = 59,135.40/x
  3. Step 3: Cross multiply
    129,205.80x = 193,679.10 × 59,135.40
  4. Step 4: Simplify right side
    129,205.80x = 11,453,291,050.14
  5. Step 5: Solve for x
    x = 11,453,291,050.14/129,205.80
  6. Step 6: Final answer
    x = 88,643.78

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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.