Home / 128,815.40-193,232.70-45,698.60

Finding the Fourth Proportional to 128,815.40, 193,232.70 and 45,698.60

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Solution

The fourth proportional to 128,815.40, 193,232.70 and 45,698.60 is: 68,551.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,815.40 : 193,232.70 = 45,698.60 : x
  2. Step 2: Convert to fraction form
    128,815.40/193,232.70 = 45,698.60/x
  3. Step 3: Cross multiply
    128,815.40x = 193,232.70 × 45,698.60
  4. Step 4: Simplify right side
    128,815.40x = 8,830,463,864.22
  5. Step 5: Solve for x
    x = 8,830,463,864.22/128,815.40
  6. Step 6: Final answer
    x = 68,551.31

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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.