Home / 154,946,972.58-213,824,238.37-85,338,830.40

Finding the Fourth Proportional to 154,946,972.58, 213,824,238.37 and 85,338,830.40

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Solution

The fourth proportional to 154,946,972.58, 213,824,238.37 and 85,338,830.40 is: 117,766,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,946,972.58 : 213,824,238.37 = 85,338,830.40 : x
  2. Step 2: Convert to fraction form
    154,946,972.58/213,824,238.37 = 85,338,830.40/x
  3. Step 3: Cross multiply
    154,946,972.58x = 213,824,238.37 × 85,338,830.40
  4. Step 4: Simplify right side
    154,946,972.58x = 18,247,510,413,666,604
  5. Step 5: Solve for x
    x = 18,247,510,413,666,604/154,946,972.58
  6. Step 6: Final answer
    x = 117,766,162.90

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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.