Home / 139,740,708.72-192,839,626.20-77,859,725.04

Finding the Fourth Proportional to 139,740,708.72, 192,839,626.20 and 77,859,725.04

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Solution

The fourth proportional to 139,740,708.72, 192,839,626.20 and 77,859,725.04 is: 107,444,998.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,740,708.72 : 192,839,626.20 = 77,859,725.04 : x
  2. Step 2: Convert to fraction form
    139,740,708.72/192,839,626.20 = 77,859,725.04/x
  3. Step 3: Cross multiply
    139,740,708.72x = 192,839,626.20 × 77,859,725.04
  4. Step 4: Simplify right side
    139,740,708.72x = 15,014,440,272,748,380
  5. Step 5: Solve for x
    x = 15,014,440,272,748,380/139,740,708.72
  6. Step 6: Final answer
    x = 107,444,998.74

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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.