Home / 136,973,736.57-189,013,265.87-78,228,292.17

Finding the Fourth Proportional to 136,973,736.57, 189,013,265.87 and 78,228,292.17

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Solution

The fourth proportional to 136,973,736.57, 189,013,265.87 and 78,228,292.17 is: 107,949,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,973,736.57 : 189,013,265.87 = 78,228,292.17 : x
  2. Step 2: Convert to fraction form
    136,973,736.57/189,013,265.87 = 78,228,292.17/x
  3. Step 3: Cross multiply
    136,973,736.57x = 189,013,265.87 × 78,228,292.17
  4. Step 4: Simplify right side
    136,973,736.57x = 14,786,184,986,093,108
  5. Step 5: Solve for x
    x = 14,786,184,986,093,108/136,973,736.57
  6. Step 6: Final answer
    x = 107,949,051.81

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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.