Home / 208,087,451.38-312,174,975.51-78,692,167.54

Finding the Fourth Proportional to 208,087,451.38, 312,174,975.51 and 78,692,167.54

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Solution

The fourth proportional to 208,087,451.38, 312,174,975.51 and 78,692,167.54 is: 118,054,814.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,087,451.38 : 312,174,975.51 = 78,692,167.54 : x
  2. Step 2: Convert to fraction form
    208,087,451.38/312,174,975.51 = 78,692,167.54/x
  3. Step 3: Cross multiply
    208,087,451.38x = 312,174,975.51 × 78,692,167.54
  4. Step 4: Simplify right side
    208,087,451.38x = 24,565,725,474,628,320
  5. Step 5: Solve for x
    x = 24,565,725,474,628,320/208,087,451.38
  6. Step 6: Final answer
    x = 118,054,814.51

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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.