Home / 129,023,905.10-178,052,910.54-71,077,153.10

Finding the Fourth Proportional to 129,023,905.10, 178,052,910.54 and 71,077,153.10

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Solution

The fourth proportional to 129,023,905.10, 178,052,910.54 and 71,077,153.10 is: 98,086,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,023,905.10 : 178,052,910.54 = 71,077,153.10 : x
  2. Step 2: Convert to fraction form
    129,023,905.10/178,052,910.54 = 71,077,153.10/x
  3. Step 3: Cross multiply
    129,023,905.10x = 178,052,910.54 × 71,077,153.10
  4. Step 4: Simplify right side
    129,023,905.10x = 12,655,493,982,352,182
  5. Step 5: Solve for x
    x = 12,655,493,982,352,182/129,023,905.10
  6. Step 6: Final answer
    x = 98,086,428.03

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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.