Home / 129,289,974.80-193,934,962.20-86,018,867.60

Finding the Fourth Proportional to 129,289,974.80, 193,934,962.20 and 86,018,867.60

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Solution

The fourth proportional to 129,289,974.80, 193,934,962.20 and 86,018,867.60 is: 129,028,301.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,289,974.80 : 193,934,962.20 = 86,018,867.60 : x
  2. Step 2: Convert to fraction form
    129,289,974.80/193,934,962.20 = 86,018,867.60/x
  3. Step 3: Cross multiply
    129,289,974.80x = 193,934,962.20 × 86,018,867.60
  4. Step 4: Simplify right side
    129,289,974.80x = 16,682,065,836,492,802
  5. Step 5: Solve for x
    x = 16,682,065,836,492,802/129,289,974.80
  6. Step 6: Final answer
    x = 129,028,301.40

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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.