Home / 130,571,478.06-180,188,638.59-71,832,882.60

Finding the Fourth Proportional to 130,571,478.06, 180,188,638.59 and 71,832,882.60

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Solution

The fourth proportional to 130,571,478.06, 180,188,638.59 and 71,832,882.60 is: 99,129,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,571,478.06 : 180,188,638.59 = 71,832,882.60 : x
  2. Step 2: Convert to fraction form
    130,571,478.06/180,188,638.59 = 71,832,882.60/x
  3. Step 3: Cross multiply
    130,571,478.06x = 180,188,638.59 × 71,832,882.60
  4. Step 4: Simplify right side
    130,571,478.06x = 12,943,469,321,689,298
  5. Step 5: Solve for x
    x = 12,943,469,321,689,298/130,571,478.06
  6. Step 6: Final answer
    x = 99,129,377.36

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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.