Home / 127,821,445.80-191,620,194.30-76,723,794.60

Finding the Fourth Proportional to 127,821,445.80, 191,620,194.30 and 76,723,794.60

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Solution

The fourth proportional to 127,821,445.80, 191,620,194.30 and 76,723,794.60 is: 115,018,480.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,821,445.80 : 191,620,194.30 = 76,723,794.60 : x
  2. Step 2: Convert to fraction form
    127,821,445.80/191,620,194.30 = 76,723,794.60/x
  3. Step 3: Cross multiply
    127,821,445.80x = 191,620,194.30 × 76,723,794.60
  4. Step 4: Simplify right side
    127,821,445.80x = 14,701,828,428,685,290
  5. Step 5: Solve for x
    x = 14,701,828,428,685,290/127,821,445.80
  6. Step 6: Final answer
    x = 115,018,480.17

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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.