Home / 143,985,730.76-198,698,891.88-77,904,778.54

Finding the Fourth Proportional to 143,985,730.76, 198,698,891.88 and 77,904,778.54

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Solution

The fourth proportional to 143,985,730.76, 198,698,891.88 and 77,904,778.54 is: 107,507,827.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,985,730.76 : 198,698,891.88 = 77,904,778.54 : x
  2. Step 2: Convert to fraction form
    143,985,730.76/198,698,891.88 = 77,904,778.54/x
  3. Step 3: Cross multiply
    143,985,730.76x = 198,698,891.88 × 77,904,778.54
  4. Step 4: Simplify right side
    143,985,730.76x = 15,479,593,167,558,056
  5. Step 5: Solve for x
    x = 15,479,593,167,558,056/143,985,730.76
  6. Step 6: Final answer
    x = 107,507,827.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.