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Finding the Fourth Proportional to 140,602,912.20, 210,904,368.30 and 49,726,501.20

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Solution

The fourth proportional to 140,602,912.20, 210,904,368.30 and 49,726,501.20 is: 74,589,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,602,912.20 : 210,904,368.30 = 49,726,501.20 : x
  2. Step 2: Convert to fraction form
    140,602,912.20/210,904,368.30 = 49,726,501.20/x
  3. Step 3: Cross multiply
    140,602,912.20x = 210,904,368.30 × 49,726,501.20
  4. Step 4: Simplify right side
    140,602,912.20x = 10,487,536,323,355,194
  5. Step 5: Solve for x
    x = 10,487,536,323,355,194/140,602,912.20
  6. Step 6: Final answer
    x = 74,589,751.80

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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.