Home / 154,946,978.06-213,824,245.95-85,338,835.88

Finding the Fourth Proportional to 154,946,978.06, 213,824,245.95 and 85,338,835.88

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Solution

The fourth proportional to 154,946,978.06, 213,824,245.95 and 85,338,835.88 is: 117,766,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,946,978.06 : 213,824,245.95 = 85,338,835.88 : x
  2. Step 2: Convert to fraction form
    154,946,978.06/213,824,245.95 = 85,338,835.88/x
  3. Step 3: Cross multiply
    154,946,978.06x = 213,824,245.95 × 85,338,835.88
  4. Step 4: Simplify right side
    154,946,978.06x = 18,247,512,232,291,804
  5. Step 5: Solve for x
    x = 18,247,512,232,291,804/154,946,978.06
  6. Step 6: Final answer
    x = 117,766,170.47

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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.