Home / 138,085.11-207,130.23-43,313.19

Finding the Fourth Proportional to 138,085.11, 207,130.23 and 43,313.19

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Solution

The fourth proportional to 138,085.11, 207,130.23 and 43,313.19 is: 64,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,085.11 : 207,130.23 = 43,313.19 : x
  2. Step 2: Convert to fraction form
    138,085.11/207,130.23 = 43,313.19/x
  3. Step 3: Cross multiply
    138,085.11x = 207,130.23 × 43,313.19
  4. Step 4: Simplify right side
    138,085.11x = 8,971,471,006.73
  5. Step 5: Solve for x
    x = 8,971,471,006.73/138,085.11
  6. Step 6: Final answer
    x = 64,970.59

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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.