Home / 86,933,927.20-130,400,890.80-77,864,000.80

Finding the Fourth Proportional to 86,933,927.20, 130,400,890.80 and 77,864,000.80

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Solution

The fourth proportional to 86,933,927.20, 130,400,890.80 and 77,864,000.80 is: 116,796,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,933,927.20 : 130,400,890.80 = 77,864,000.80 : x
  2. Step 2: Convert to fraction form
    86,933,927.20/130,400,890.80 = 77,864,000.80/x
  3. Step 3: Cross multiply
    86,933,927.20x = 130,400,890.80 × 77,864,000.80
  4. Step 4: Simplify right side
    86,933,927.20x = 10,153,535,065,571,912
  5. Step 5: Solve for x
    x = 10,153,535,065,571,912/86,933,927.20
  6. Step 6: Final answer
    x = 116,796,001.20

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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.