Home / 208,179,105.30-312,044,709.15-78,736,698.90

Finding the Fourth Proportional to 208,179,105.30, 312,044,709.15 and 78,736,698.90

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Solution

The fourth proportional to 208,179,105.30, 312,044,709.15 and 78,736,698.90 is: 118,020,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179,105.30 : 312,044,709.15 = 78,736,698.90 : x
  2. Step 2: Convert to fraction form
    208,179,105.30/312,044,709.15 = 78,736,698.90/x
  3. Step 3: Cross multiply
    208,179,105.30x = 312,044,709.15 × 78,736,698.90
  4. Step 4: Simplify right side
    208,179,105.30x = 24,569,370,307,681,624
  5. Step 5: Solve for x
    x = 24,569,370,307,681,624/208,179,105.30
  6. Step 6: Final answer
    x = 118,020,347.30

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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.