Home / 120,180,666.40-180,270,999.60-78,568,836.10

Finding the Fourth Proportional to 120,180,666.40, 180,270,999.60 and 78,568,836.10

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Solution

The fourth proportional to 120,180,666.40, 180,270,999.60 and 78,568,836.10 is: 117,853,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,180,666.40 : 180,270,999.60 = 78,568,836.10 : x
  2. Step 2: Convert to fraction form
    120,180,666.40/180,270,999.60 = 78,568,836.10/x
  3. Step 3: Cross multiply
    120,180,666.40x = 180,270,999.60 × 78,568,836.10
  4. Step 4: Simplify right side
    120,180,666.40x = 14,163,682,621,155,564
  5. Step 5: Solve for x
    x = 14,163,682,621,155,564/120,180,666.40
  6. Step 6: Final answer
    x = 117,853,254.15

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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.