Home / 109,315.11-163,991.40-50,155.86

Finding the Fourth Proportional to 109,315.11, 163,991.40 and 50,155.86

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Solution

The fourth proportional to 109,315.11, 163,991.40 and 50,155.86 is: 75,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,315.11 : 163,991.40 = 50,155.86 : x
  2. Step 2: Convert to fraction form
    109,315.11/163,991.40 = 50,155.86/x
  3. Step 3: Cross multiply
    109,315.11x = 163,991.40 × 50,155.86
  4. Step 4: Simplify right side
    109,315.11x = 8,225,129,699.60
  5. Step 5: Solve for x
    x = 8,225,129,699.60/109,315.11
  6. Step 6: Final answer
    x = 75,242.39

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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.