Home / 154,969,965.12-213,940,622.88-120,084,340.80

Finding the Fourth Proportional to 154,969,965.12, 213,940,622.88 and 120,084,340.80

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Solution

The fourth proportional to 154,969,965.12, 213,940,622.88 and 120,084,340.80 is: 165,779,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,969,965.12 : 213,940,622.88 = 120,084,340.80 : x
  2. Step 2: Convert to fraction form
    154,969,965.12/213,940,622.88 = 120,084,340.80/x
  3. Step 3: Cross multiply
    154,969,965.12x = 213,940,622.88 × 120,084,340.80
  4. Step 4: Simplify right side
    154,969,965.12x = 25,690,918,668,886,196
  5. Step 5: Solve for x
    x = 25,690,918,668,886,196/154,969,965.12
  6. Step 6: Final answer
    x = 165,779,986.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.