Home / 128,968.90-193,559.95-65,835.66

Finding the Fourth Proportional to 128,968.90, 193,559.95 and 65,835.66

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Solution

The fourth proportional to 128,968.90, 193,559.95 and 65,835.66 is: 98,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,968.90 : 193,559.95 = 65,835.66 : x
  2. Step 2: Convert to fraction form
    128,968.90/193,559.95 = 65,835.66/x
  3. Step 3: Cross multiply
    128,968.90x = 193,559.95 × 65,835.66
  4. Step 4: Simplify right side
    128,968.90x = 12,743,147,057.82
  5. Step 5: Solve for x
    x = 12,743,147,057.82/128,968.90
  6. Step 6: Final answer
    x = 98,807.91

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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.