Home / 136,973,735.07-189,013,263.80-78,228,290.67

Finding the Fourth Proportional to 136,973,735.07, 189,013,263.80 and 78,228,290.67

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Solution

The fourth proportional to 136,973,735.07, 189,013,263.80 and 78,228,290.67 is: 107,949,049.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,973,735.07 : 189,013,263.80 = 78,228,290.67 : x
  2. Step 2: Convert to fraction form
    136,973,735.07/189,013,263.80 = 78,228,290.67/x
  3. Step 3: Cross multiply
    136,973,735.07x = 189,013,263.80 × 78,228,290.67
  4. Step 4: Simplify right side
    136,973,735.07x = 14,786,184,540,640,646
  5. Step 5: Solve for x
    x = 14,786,184,540,640,646/136,973,735.07
  6. Step 6: Final answer
    x = 107,949,049.74

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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.