Home / 136,978,014.28-189,029,912.34-74,253,918.28

Finding the Fourth Proportional to 136,978,014.28, 189,029,912.34 and 74,253,918.28

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Solution

The fourth proportional to 136,978,014.28, 189,029,912.34 and 74,253,918.28 is: 102,470,544.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,978,014.28 : 189,029,912.34 = 74,253,918.28 : x
  2. Step 2: Convert to fraction form
    136,978,014.28/189,029,912.34 = 74,253,918.28/x
  3. Step 3: Cross multiply
    136,978,014.28x = 189,029,912.34 × 74,253,918.28
  4. Step 4: Simplify right side
    136,978,014.28x = 14,036,211,663,369,924
  5. Step 5: Solve for x
    x = 14,036,211,663,369,924/136,978,014.28
  6. Step 6: Final answer
    x = 102,470,544.18

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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.