Home / 128,284.96-192,427.80-39,535.60

Finding the Fourth Proportional to 128,284.96, 192,427.80 and 39,535.60

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Solution

The fourth proportional to 128,284.96, 192,427.80 and 39,535.60 is: 59,303.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,284.96 : 192,427.80 = 39,535.60 : x
  2. Step 2: Convert to fraction form
    128,284.96/192,427.80 = 39,535.60/x
  3. Step 3: Cross multiply
    128,284.96x = 192,427.80 × 39,535.60
  4. Step 4: Simplify right side
    128,284.96x = 7,607,748,529.68
  5. Step 5: Solve for x
    x = 7,607,748,529.68/128,284.96
  6. Step 6: Final answer
    x = 59,303.51

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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.