Home / 86,231,926.80-129,347,890.20-78,295,741.20

Finding the Fourth Proportional to 86,231,926.80, 129,347,890.20 and 78,295,741.20

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Solution

The fourth proportional to 86,231,926.80, 129,347,890.20 and 78,295,741.20 is: 117,443,611.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,231,926.80 : 129,347,890.20 = 78,295,741.20 : x
  2. Step 2: Convert to fraction form
    86,231,926.80/129,347,890.20 = 78,295,741.20/x
  3. Step 3: Cross multiply
    86,231,926.80x = 129,347,890.20 × 78,295,741.20
  4. Step 4: Simplify right side
    86,231,926.80x = 10,127,388,935,865,216
  5. Step 5: Solve for x
    x = 10,127,388,935,865,216/86,231,926.80
  6. Step 6: Final answer
    x = 117,443,611.80

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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.