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Finding the Fourth Proportional to 125,760.99, 173,507.83 and 85,404.77

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Solution

The fourth proportional to 125,760.99, 173,507.83 and 85,404.77 is: 117,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,760.99 : 173,507.83 = 85,404.77 : x
  2. Step 2: Convert to fraction form
    125,760.99/173,507.83 = 85,404.77/x
  3. Step 3: Cross multiply
    125,760.99x = 173,507.83 × 85,404.77
  4. Step 4: Simplify right side
    125,760.99x = 14,818,396,314.35
  5. Step 5: Solve for x
    x = 14,818,396,314.35/125,760.99
  6. Step 6: Final answer
    x = 117,829.83

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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.