Home / 138,606.08-207,887.52-45,111.20

Finding the Fourth Proportional to 138,606.08, 207,887.52 and 45,111.20

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Solution

The fourth proportional to 138,606.08, 207,887.52 and 45,111.20 is: 67,659.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606.08 : 207,887.52 = 45,111.20 : x
  2. Step 2: Convert to fraction form
    138,606.08/207,887.52 = 45,111.20/x
  3. Step 3: Cross multiply
    138,606.08x = 207,887.52 × 45,111.20
  4. Step 4: Simplify right side
    138,606.08x = 9,378,055,492.22
  5. Step 5: Solve for x
    x = 9,378,055,492.22/138,606.08
  6. Step 6: Final answer
    x = 67,659.77

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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.