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Finding the Fourth Proportional to 100,022.80, 149,771.76 and 64,855.84

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Solution

The fourth proportional to 100,022.80, 149,771.76 and 64,855.84 is: 97,113.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,022.80 : 149,771.76 = 64,855.84 : x
  2. Step 2: Convert to fraction form
    100,022.80/149,771.76 = 64,855.84/x
  3. Step 3: Cross multiply
    100,022.80x = 149,771.76 × 64,855.84
  4. Step 4: Simplify right side
    100,022.80x = 9,713,573,303.08
  5. Step 5: Solve for x
    x = 9,713,573,303.08/100,022.80
  6. Step 6: Final answer
    x = 97,113.59

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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.