Home / 128,904,686.06-193,355,115.41-31,860,388.31

Finding the Fourth Proportional to 128,904,686.06, 193,355,115.41 and 31,860,388.31

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Solution

The fourth proportional to 128,904,686.06, 193,355,115.41 and 31,860,388.31 is: 47,790,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904,686.06 : 193,355,115.41 = 31,860,388.31 : x
  2. Step 2: Convert to fraction form
    128,904,686.06/193,355,115.41 = 31,860,388.31/x
  3. Step 3: Cross multiply
    128,904,686.06x = 193,355,115.41 × 31,860,388.31
  4. Step 4: Simplify right side
    128,904,686.06x = 6,160,369,057,800,340
  5. Step 5: Solve for x
    x = 6,160,369,057,800,340/128,904,686.06
  6. Step 6: Final answer
    x = 47,790,109.47

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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.