Home / 108,538.10-162,807.15-73,108.70

Finding the Fourth Proportional to 108,538.10, 162,807.15 and 73,108.70

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Solution

The fourth proportional to 108,538.10, 162,807.15 and 73,108.70 is: 109,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,538.10 : 162,807.15 = 73,108.70 : x
  2. Step 2: Convert to fraction form
    108,538.10/162,807.15 = 73,108.70/x
  3. Step 3: Cross multiply
    108,538.10x = 162,807.15 × 73,108.70
  4. Step 4: Simplify right side
    108,538.10x = 11,902,619,087.21
  5. Step 5: Solve for x
    x = 11,902,619,087.21/108,538.10
  6. Step 6: Final answer
    x = 109,663.05

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1.5x scale

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.