Home / 123,490.11-170,416.53-66,901.49

Finding the Fourth Proportional to 123,490.11, 170,416.53 and 66,901.49

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Solution

The fourth proportional to 123,490.11, 170,416.53 and 66,901.49 is: 92,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,490.11 : 170,416.53 = 66,901.49 : x
  2. Step 2: Convert to fraction form
    123,490.11/170,416.53 = 66,901.49/x
  3. Step 3: Cross multiply
    123,490.11x = 170,416.53 × 66,901.49
  4. Step 4: Simplify right side
    123,490.11x = 11,401,118,925.55
  5. Step 5: Solve for x
    x = 11,401,118,925.55/123,490.11
  6. Step 6: Final answer
    x = 92,324.15

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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.