Home / 128,115.04-192,289.73-64,978.74

Finding the Fourth Proportional to 128,115.04, 192,289.73 and 64,978.74

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Solution

The fourth proportional to 128,115.04, 192,289.73 and 64,978.74 is: 97,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115.04 : 192,289.73 = 64,978.74 : x
  2. Step 2: Convert to fraction form
    128,115.04/192,289.73 = 64,978.74/x
  3. Step 3: Cross multiply
    128,115.04x = 192,289.73 × 64,978.74
  4. Step 4: Simplify right side
    128,115.04x = 12,494,744,045.45
  5. Step 5: Solve for x
    x = 12,494,744,045.45/128,115.04
  6. Step 6: Final answer
    x = 97,527.54

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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.