Home / 128,118,209.40-192,177,314.10-126,923,815.80

Finding the Fourth Proportional to 128,118,209.40, 192,177,314.10 and 126,923,815.80

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Solution

The fourth proportional to 128,118,209.40, 192,177,314.10 and 126,923,815.80 is: 190,385,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,118,209.40 : 192,177,314.10 = 126,923,815.80 : x
  2. Step 2: Convert to fraction form
    128,118,209.40/192,177,314.10 = 126,923,815.80/x
  3. Step 3: Cross multiply
    128,118,209.40x = 192,177,314.10 × 126,923,815.80
  4. Step 4: Simplify right side
    128,118,209.40x = 24,391,878,015,767,140
  5. Step 5: Solve for x
    x = 24,391,878,015,767,140/128,118,209.40
  6. Step 6: Final answer
    x = 190,385,723.70

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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.