Home / 128,966.90-193,556.95-65,833.66

Finding the Fourth Proportional to 128,966.90, 193,556.95 and 65,833.66

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Solution

The fourth proportional to 128,966.90, 193,556.95 and 65,833.66 is: 98,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,966.90 : 193,556.95 = 65,833.66 : x
  2. Step 2: Convert to fraction form
    128,966.90/193,556.95 = 65,833.66/x
  3. Step 3: Cross multiply
    128,966.90x = 193,556.95 × 65,833.66
  4. Step 4: Simplify right side
    128,966.90x = 12,742,562,436.94
  5. Step 5: Solve for x
    x = 12,742,562,436.94/128,966.90
  6. Step 6: Final answer
    x = 98,804.91

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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.