Home / 129,461.12-194,192.96-40,712.64

Finding the Fourth Proportional to 129,461.12, 194,192.96 and 40,712.64

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Solution

The fourth proportional to 129,461.12, 194,192.96 and 40,712.64 is: 61,069.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,461.12 : 194,192.96 = 40,712.64 : x
  2. Step 2: Convert to fraction form
    129,461.12/194,192.96 = 40,712.64/x
  3. Step 3: Cross multiply
    129,461.12x = 194,192.96 × 40,712.64
  4. Step 4: Simplify right side
    129,461.12x = 7,906,108,071.01
  5. Step 5: Solve for x
    x = 7,906,108,071.01/129,461.12
  6. Step 6: Final answer
    x = 61,069.36

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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.