Home / 86,988,946.13-130,722,576.87-81,301,198.83

Finding the Fourth Proportional to 86,988,946.13, 130,722,576.87 and 81,301,198.83

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Solution

The fourth proportional to 86,988,946.13, 130,722,576.87 and 81,301,198.83 is: 122,175,318.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988,946.13 : 130,722,576.87 = 81,301,198.83 : x
  2. Step 2: Convert to fraction form
    86,988,946.13/130,722,576.87 = 81,301,198.83/x
  3. Step 3: Cross multiply
    86,988,946.13x = 130,722,576.87 × 81,301,198.83
  4. Step 4: Simplify right side
    86,988,946.13x = 10,627,902,213,860,352
  5. Step 5: Solve for x
    x = 10,627,902,213,860,352/86,988,946.13
  6. Step 6: Final answer
    x = 122,175,318.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.