Home / 128,716.70-193,130.60-69,594.12

Finding the Fourth Proportional to 128,716.70, 193,130.60 and 69,594.12

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Solution

The fourth proportional to 128,716.70, 193,130.60 and 69,594.12 is: 104,421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,716.70 : 193,130.60 = 69,594.12 : x
  2. Step 2: Convert to fraction form
    128,716.70/193,130.60 = 69,594.12/x
  3. Step 3: Cross multiply
    128,716.70x = 193,130.60 × 69,594.12
  4. Step 4: Simplify right side
    128,716.70x = 13,440,753,804.10
  5. Step 5: Solve for x
    x = 13,440,753,804.10/128,716.70
  6. Step 6: Final answer
    x = 104,421.22

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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.