Home / 99,909.85-137,873.98-54,586.86

Finding the Fourth Proportional to 99,909.85, 137,873.98 and 54,586.86

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Solution

The fourth proportional to 99,909.85, 137,873.98 and 54,586.86 is: 75,328.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,909.85 : 137,873.98 = 54,586.86 : x
  2. Step 2: Convert to fraction form
    99,909.85/137,873.98 = 54,586.86/x
  3. Step 3: Cross multiply
    99,909.85x = 137,873.98 × 54,586.86
  4. Step 4: Simplify right side
    99,909.85x = 7,526,107,643.90
  5. Step 5: Solve for x
    x = 7,526,107,643.90/99,909.85
  6. Step 6: Final answer
    x = 75,328.99

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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.