Home / 128,923.60-193,385.40-105,576.40

Finding the Fourth Proportional to 128,923.60, 193,385.40 and 105,576.40

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Solution

The fourth proportional to 128,923.60, 193,385.40 and 105,576.40 is: 158,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,923.60 : 193,385.40 = 105,576.40 : x
  2. Step 2: Convert to fraction form
    128,923.60/193,385.40 = 105,576.40/x
  3. Step 3: Cross multiply
    128,923.60x = 193,385.40 × 105,576.40
  4. Step 4: Simplify right side
    128,923.60x = 20,416,934,344.56
  5. Step 5: Solve for x
    x = 20,416,934,344.56/128,923.60
  6. Step 6: Final answer
    x = 158,364.60

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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.