Home / 143,985,731.64-198,698,893.09-77,904,779.41

Finding the Fourth Proportional to 143,985,731.64, 198,698,893.09 and 77,904,779.41

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Solution

The fourth proportional to 143,985,731.64, 198,698,893.09 and 77,904,779.41 is: 107,507,829.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,985,731.64 : 198,698,893.09 = 77,904,779.41 : x
  2. Step 2: Convert to fraction form
    143,985,731.64/198,698,893.09 = 77,904,779.41/x
  3. Step 3: Cross multiply
    143,985,731.64x = 198,698,893.09 × 77,904,779.41
  4. Step 4: Simplify right side
    143,985,731.64x = 15,479,593,435,241,234
  5. Step 5: Solve for x
    x = 15,479,593,435,241,234/143,985,731.64
  6. Step 6: Final answer
    x = 107,507,829.14

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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.