Home / 208,179,107.80-312,044,712.90-78,736,701.40

Finding the Fourth Proportional to 208,179,107.80, 312,044,712.90 and 78,736,701.40

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Solution

The fourth proportional to 208,179,107.80, 312,044,712.90 and 78,736,701.40 is: 118,020,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179,107.80 : 312,044,712.90 = 78,736,701.40 : x
  2. Step 2: Convert to fraction form
    208,179,107.80/312,044,712.90 = 78,736,701.40/x
  3. Step 3: Cross multiply
    208,179,107.80x = 312,044,712.90 × 78,736,701.40
  4. Step 4: Simplify right side
    208,179,107.80x = 24,569,371,383,056,028
  5. Step 5: Solve for x
    x = 24,569,371,383,056,028/208,179,107.80
  6. Step 6: Final answer
    x = 118,020,351.05

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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.