Home / 129,515,528.44-178,731,896.04-70,778,200.52

Finding the Fourth Proportional to 129,515,528.44, 178,731,896.04 and 70,778,200.52

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Solution

The fourth proportional to 129,515,528.44, 178,731,896.04 and 70,778,200.52 is: 97,674,171.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,515,528.44 : 178,731,896.04 = 70,778,200.52 : x
  2. Step 2: Convert to fraction form
    129,515,528.44/178,731,896.04 = 70,778,200.52/x
  3. Step 3: Cross multiply
    129,515,528.44x = 178,731,896.04 × 70,778,200.52
  4. Step 4: Simplify right side
    129,515,528.44x = 12,650,321,977,238,912
  5. Step 5: Solve for x
    x = 12,650,321,977,238,912/129,515,528.44
  6. Step 6: Final answer
    x = 97,674,171.81

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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.