Home / 72,178.48-108,263.40-19,586.80

Finding the Fourth Proportional to 72,178.48, 108,263.40 and 19,586.80

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Solution

The fourth proportional to 72,178.48, 108,263.40 and 19,586.80 is: 29,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,178.48 : 108,263.40 = 19,586.80 : x
  2. Step 2: Convert to fraction form
    72,178.48/108,263.40 = 19,586.80/x
  3. Step 3: Cross multiply
    72,178.48x = 108,263.40 × 19,586.80
  4. Step 4: Simplify right side
    72,178.48x = 2,120,533,563.12
  5. Step 5: Solve for x
    x = 2,120,533,563.12/72,178.48
  6. Step 6: Final answer
    x = 29,379.03

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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.