Home / 128,966.40-193,556.20-65,833.16

Finding the Fourth Proportional to 128,966.40, 193,556.20 and 65,833.16

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Solution

The fourth proportional to 128,966.40, 193,556.20 and 65,833.16 is: 98,804.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,966.40 : 193,556.20 = 65,833.16 : x
  2. Step 2: Convert to fraction form
    128,966.40/193,556.20 = 65,833.16/x
  3. Step 3: Cross multiply
    128,966.40x = 193,556.20 × 65,833.16
  4. Step 4: Simplify right side
    128,966.40x = 12,742,416,283.59
  5. Step 5: Solve for x
    x = 12,742,416,283.59/128,966.40
  6. Step 6: Final answer
    x = 98,804.16

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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.