Home / 140,790,992.43-194,291,988.04-78,071,508.89

Finding the Fourth Proportional to 140,790,992.43, 194,291,988.04 and 78,071,508.89

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Solution

The fourth proportional to 140,790,992.43, 194,291,988.04 and 78,071,508.89 is: 107,738,914.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,790,992.43 : 194,291,988.04 = 78,071,508.89 : x
  2. Step 2: Convert to fraction form
    140,790,992.43/194,291,988.04 = 78,071,508.89/x
  3. Step 3: Cross multiply
    140,790,992.43x = 194,291,988.04 × 78,071,508.89
  4. Step 4: Simplify right side
    140,790,992.43x = 15,168,668,670,744,352
  5. Step 5: Solve for x
    x = 15,168,668,670,744,352/140,790,992.43
  6. Step 6: Final answer
    x = 107,738,914.33

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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.