Home / 129,181,866.12-178,275,280.32-70,447,745.52

Finding the Fourth Proportional to 129,181,866.12, 178,275,280.32 and 70,447,745.52

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Solution

The fourth proportional to 129,181,866.12, 178,275,280.32 and 70,447,745.52 is: 97,220,236.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,181,866.12 : 178,275,280.32 = 70,447,745.52 : x
  2. Step 2: Convert to fraction form
    129,181,866.12/178,275,280.32 = 70,447,745.52/x
  3. Step 3: Cross multiply
    129,181,866.12x = 178,275,280.32 × 70,447,745.52
  4. Step 4: Simplify right side
    129,181,866.12x = 12,559,091,580,490,022
  5. Step 5: Solve for x
    x = 12,559,091,580,490,022/129,181,866.12
  6. Step 6: Final answer
    x = 97,220,236.54

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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.