Home / 123,493.10-170,421.30-66,904.47

Finding the Fourth Proportional to 123,493.10, 170,421.30 and 66,904.47

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Solution

The fourth proportional to 123,493.10, 170,421.30 and 66,904.47 is: 92,328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,493.10 : 170,421.30 = 66,904.47 : x
  2. Step 2: Convert to fraction form
    123,493.10/170,421.30 = 66,904.47/x
  3. Step 3: Cross multiply
    123,493.10x = 170,421.30 × 66,904.47
  4. Step 4: Simplify right side
    123,493.10x = 11,401,947,141.40
  5. Step 5: Solve for x
    x = 11,401,947,141.40/123,493.10
  6. Step 6: Final answer
    x = 92,328.62

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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.