Home / 129,290,508.69-178,424,669.97-70,556,956.94

Finding the Fourth Proportional to 129,290,508.69, 178,424,669.97 and 70,556,956.94

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Solution

The fourth proportional to 129,290,508.69, 178,424,669.97 and 70,556,956.94 is: 97,370,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,290,508.69 : 178,424,669.97 = 70,556,956.94 : x
  2. Step 2: Convert to fraction form
    129,290,508.69/178,424,669.97 = 70,556,956.94/x
  3. Step 3: Cross multiply
    129,290,508.69x = 178,424,669.97 × 70,556,956.94
  4. Step 4: Simplify right side
    129,290,508.69x = 12,589,101,755,214,878
  5. Step 5: Solve for x
    x = 12,589,101,755,214,878/129,290,508.69
  6. Step 6: Final answer
    x = 97,370,656.85

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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.