Home / 129,289,970.80-193,934,956.20-86,018,863.60

Finding the Fourth Proportional to 129,289,970.80, 193,934,956.20 and 86,018,863.60

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Solution

The fourth proportional to 129,289,970.80, 193,934,956.20 and 86,018,863.60 is: 129,028,295.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,289,970.80 : 193,934,956.20 = 86,018,863.60 : x
  2. Step 2: Convert to fraction form
    129,289,970.80/193,934,956.20 = 86,018,863.60/x
  3. Step 3: Cross multiply
    129,289,970.80x = 193,934,956.20 × 86,018,863.60
  4. Step 4: Simplify right side
    129,289,970.80x = 16,682,064,544,639,772
  5. Step 5: Solve for x
    x = 16,682,064,544,639,772/129,289,970.80
  6. Step 6: Final answer
    x = 129,028,295.40

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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.