Home / 148,626,934.40-205,103,956.74-81,647,013.80

Finding the Fourth Proportional to 148,626,934.40, 205,103,956.74 and 81,647,013.80

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Solution

The fourth proportional to 148,626,934.40, 205,103,956.74 and 81,647,013.80 is: 112,672,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,626,934.40 : 205,103,956.74 = 81,647,013.80 : x
  2. Step 2: Convert to fraction form
    148,626,934.40/205,103,956.74 = 81,647,013.80/x
  3. Step 3: Cross multiply
    148,626,934.40x = 205,103,956.74 × 81,647,013.80
  4. Step 4: Simplify right side
    148,626,934.40x = 16,746,125,586,385,384
  5. Step 5: Solve for x
    x = 16,746,125,586,385,384/148,626,934.40
  6. Step 6: Final answer
    x = 112,672,212.84

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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.