Home / 199,290,772.80-298,936,159.20-126,828,792.45

Finding the Fourth Proportional to 199,290,772.80, 298,936,159.20 and 126,828,792.45

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Solution

The fourth proportional to 199,290,772.80, 298,936,159.20 and 126,828,792.45 is: 190,243,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,290,772.80 : 298,936,159.20 = 126,828,792.45 : x
  2. Step 2: Convert to fraction form
    199,290,772.80/298,936,159.20 = 126,828,792.45/x
  3. Step 3: Cross multiply
    199,290,772.80x = 298,936,159.20 × 126,828,792.45
  4. Step 4: Simplify right side
    199,290,772.80x = 37,913,712,090,976,960
  5. Step 5: Solve for x
    x = 37,913,712,090,976,960/199,290,772.80
  6. Step 6: Final answer
    x = 190,243,188.68

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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.