Home / 128,865.60-193,298.40-89,499.60

Finding the Fourth Proportional to 128,865.60, 193,298.40 and 89,499.60

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Solution

The fourth proportional to 128,865.60, 193,298.40 and 89,499.60 is: 134,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,865.60 : 193,298.40 = 89,499.60 : x
  2. Step 2: Convert to fraction form
    128,865.60/193,298.40 = 89,499.60/x
  3. Step 3: Cross multiply
    128,865.60x = 193,298.40 × 89,499.60
  4. Step 4: Simplify right side
    128,865.60x = 17,300,129,480.64
  5. Step 5: Solve for x
    x = 17,300,129,480.64/128,865.60
  6. Step 6: Final answer
    x = 134,249.40

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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.