Home / 123,490.79-170,416.23-66,902.03

Finding the Fourth Proportional to 123,490.79, 170,416.23 and 66,902.03

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Solution

The fourth proportional to 123,490.79, 170,416.23 and 66,902.03 is: 92,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,490.79 : 170,416.23 = 66,902.03 : x
  2. Step 2: Convert to fraction form
    123,490.79/170,416.23 = 66,902.03/x
  3. Step 3: Cross multiply
    123,490.79x = 170,416.23 × 66,902.03
  4. Step 4: Simplify right side
    123,490.79x = 11,401,191,731.95
  5. Step 5: Solve for x
    x = 11,401,191,731.95/123,490.79
  6. Step 6: Final answer
    x = 92,324.23

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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.