Home / 86,266,186.20-129,399,279.30-78,303,562.20

Finding the Fourth Proportional to 86,266,186.20, 129,399,279.30 and 78,303,562.20

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Solution

The fourth proportional to 86,266,186.20, 129,399,279.30 and 78,303,562.20 is: 117,455,343.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,266,186.20 : 129,399,279.30 = 78,303,562.20 : x
  2. Step 2: Convert to fraction form
    86,266,186.20/129,399,279.30 = 78,303,562.20/x
  3. Step 3: Cross multiply
    86,266,186.20x = 129,399,279.30 × 78,303,562.20
  4. Step 4: Simplify right side
    86,266,186.20x = 10,132,424,515,302,722
  5. Step 5: Solve for x
    x = 10,132,424,515,302,722/86,266,186.20
  6. Step 6: Final answer
    x = 117,455,343.30

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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.