Home / 148,626,933.40-205,103,955.36-81,647,012.80

Finding the Fourth Proportional to 148,626,933.40, 205,103,955.36 and 81,647,012.80

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Solution

The fourth proportional to 148,626,933.40, 205,103,955.36 and 81,647,012.80 is: 112,672,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,626,933.40 : 205,103,955.36 = 81,647,012.80 : x
  2. Step 2: Convert to fraction form
    148,626,933.40/205,103,955.36 = 81,647,012.80/x
  3. Step 3: Cross multiply
    148,626,933.40x = 205,103,955.36 × 81,647,012.80
  4. Step 4: Simplify right side
    148,626,933.40x = 16,746,125,268,608,550
  5. Step 5: Solve for x
    x = 16,746,125,268,608,550/148,626,933.40
  6. Step 6: Final answer
    x = 112,672,211.46

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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.