Home / 100,321.20-149,597.60-99,421.83

Finding the Fourth Proportional to 100,321.20, 149,597.60 and 99,421.83

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Solution

The fourth proportional to 100,321.20, 149,597.60 and 99,421.83 is: 148,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,321.20 : 149,597.60 = 99,421.83 : x
  2. Step 2: Convert to fraction form
    100,321.20/149,597.60 = 99,421.83/x
  3. Step 3: Cross multiply
    100,321.20x = 149,597.60 × 99,421.83
  4. Step 4: Simplify right side
    100,321.20x = 14,873,266,658.50
  5. Step 5: Solve for x
    x = 14,873,266,658.50/100,321.20
  6. Step 6: Final answer
    x = 148,256.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.