Home / 128,940.24-193,487.04-69,774.72

Finding the Fourth Proportional to 128,940.24, 193,487.04 and 69,774.72

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Solution

The fourth proportional to 128,940.24, 193,487.04 and 69,774.72 is: 104,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,940.24 : 193,487.04 = 69,774.72 : x
  2. Step 2: Convert to fraction form
    128,940.24/193,487.04 = 69,774.72/x
  3. Step 3: Cross multiply
    128,940.24x = 193,487.04 × 69,774.72
  4. Step 4: Simplify right side
    128,940.24x = 13,500,504,039.63
  5. Step 5: Solve for x
    x = 13,500,504,039.63/128,940.24
  6. Step 6: Final answer
    x = 104,703.57

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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.