Home / 100,855.20-151,282.80-69,362.40

Finding the Fourth Proportional to 100,855.20, 151,282.80 and 69,362.40

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Solution

The fourth proportional to 100,855.20, 151,282.80 and 69,362.40 is: 104,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,855.20 : 151,282.80 = 69,362.40 : x
  2. Step 2: Convert to fraction form
    100,855.20/151,282.80 = 69,362.40/x
  3. Step 3: Cross multiply
    100,855.20x = 151,282.80 × 69,362.40
  4. Step 4: Simplify right side
    100,855.20x = 10,493,338,086.72
  5. Step 5: Solve for x
    x = 10,493,338,086.72/100,855.20
  6. Step 6: Final answer
    x = 104,043.60

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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.