Home / 129,261-193,890.05-50,430.59

Finding the Fourth Proportional to 129,261, 193,890.05 and 50,430.59

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Solution

The fourth proportional to 129,261, 193,890.05 and 50,430.59 is: 75,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,261 : 193,890.05 = 50,430.59 : x
  2. Step 2: Convert to fraction form
    129,261/193,890.05 = 50,430.59/x
  3. Step 3: Cross multiply
    129,261x = 193,890.05 × 50,430.59
  4. Step 4: Simplify right side
    129,261x = 9,777,989,616.63
  5. Step 5: Solve for x
    x = 9,777,989,616.63/129,261
  6. Step 6: Final answer
    x = 75,645.32

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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.