Home / 123,493.19-170,420.90-66,904.56

Finding the Fourth Proportional to 123,493.19, 170,420.90 and 66,904.56

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Solution

The fourth proportional to 123,493.19, 170,420.90 and 66,904.56 is: 92,328.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,493.19 : 170,420.90 = 66,904.56 : x
  2. Step 2: Convert to fraction form
    123,493.19/170,420.90 = 66,904.56/x
  3. Step 3: Cross multiply
    123,493.19x = 170,420.90 × 66,904.56
  4. Step 4: Simplify right side
    123,493.19x = 11,401,934,994.78
  5. Step 5: Solve for x
    x = 11,401,934,994.78/123,493.19
  6. Step 6: Final answer
    x = 92,328.46

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1.5x scale

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.