Home / 120,115,666.80-180,173,500.20-81,568,479.60

Finding the Fourth Proportional to 120,115,666.80, 180,173,500.20 and 81,568,479.60

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Solution

The fourth proportional to 120,115,666.80, 180,173,500.20 and 81,568,479.60 is: 122,352,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,115,666.80 : 180,173,500.20 = 81,568,479.60 : x
  2. Step 2: Convert to fraction form
    120,115,666.80/180,173,500.20 = 81,568,479.60/x
  3. Step 3: Cross multiply
    120,115,666.80x = 180,173,500.20 × 81,568,479.60
  4. Step 4: Simplify right side
    120,115,666.80x = 14,696,478,475,524,294
  5. Step 5: Solve for x
    x = 14,696,478,475,524,294/120,115,666.80
  6. Step 6: Final answer
    x = 122,352,719.40

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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.