Home / 128,823.36-193,141.62-86,598.71

Finding the Fourth Proportional to 128,823.36, 193,141.62 and 86,598.71

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Solution

The fourth proportional to 128,823.36, 193,141.62 and 86,598.71 is: 129,835.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,823.36 : 193,141.62 = 86,598.71 : x
  2. Step 2: Convert to fraction form
    128,823.36/193,141.62 = 86,598.71/x
  3. Step 3: Cross multiply
    128,823.36x = 193,141.62 × 86,598.71
  4. Step 4: Simplify right side
    128,823.36x = 16,725,814,173.60
  5. Step 5: Solve for x
    x = 16,725,814,173.60/128,823.36
  6. Step 6: Final answer
    x = 129,835.26

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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.