Home / 129,290,513.57-178,424,676.65-70,556,961.79

Finding the Fourth Proportional to 129,290,513.57, 178,424,676.65 and 70,556,961.79

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Solution

The fourth proportional to 129,290,513.57, 178,424,676.65 and 70,556,961.79 is: 97,370,663.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,290,513.57 : 178,424,676.65 = 70,556,961.79 : x
  2. Step 2: Convert to fraction form
    129,290,513.57/178,424,676.65 = 70,556,961.79/x
  3. Step 3: Cross multiply
    129,290,513.57x = 178,424,676.65 × 70,556,961.79
  4. Step 4: Simplify right side
    129,290,513.57x = 12,589,103,092,787,156
  5. Step 5: Solve for x
    x = 12,589,103,092,787,156/129,290,513.57
  6. Step 6: Final answer
    x = 97,370,663.52

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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.