Home / 112,129.10-168,189.99-45,549.53

Finding the Fourth Proportional to 112,129.10, 168,189.99 and 45,549.53

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Solution

The fourth proportional to 112,129.10, 168,189.99 and 45,549.53 is: 68,322.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129.10 : 168,189.99 = 45,549.53 : x
  2. Step 2: Convert to fraction form
    112,129.10/168,189.99 = 45,549.53/x
  3. Step 3: Cross multiply
    112,129.10x = 168,189.99 × 45,549.53
  4. Step 4: Simplify right side
    112,129.10x = 7,660,974,995.20
  5. Step 5: Solve for x
    x = 7,660,974,995.20/112,129.10
  6. Step 6: Final answer
    x = 68,322.81

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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.