Home / 120,115,664.30-180,173,496.45-81,568,477.10

Finding the Fourth Proportional to 120,115,664.30, 180,173,496.45 and 81,568,477.10

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Solution

The fourth proportional to 120,115,664.30, 180,173,496.45 and 81,568,477.10 is: 122,352,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,115,664.30 : 180,173,496.45 = 81,568,477.10 : x
  2. Step 2: Convert to fraction form
    120,115,664.30/180,173,496.45 = 81,568,477.10/x
  3. Step 3: Cross multiply
    120,115,664.30x = 180,173,496.45 × 81,568,477.10
  4. Step 4: Simplify right side
    120,115,664.30x = 14,696,477,719,208,754
  5. Step 5: Solve for x
    x = 14,696,477,719,208,754/120,115,664.30
  6. Step 6: Final answer
    x = 122,352,715.65

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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.