Home / 138,653.13-207,931.08-38,786.49

Finding the Fourth Proportional to 138,653.13, 207,931.08 and 38,786.49

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Solution

The fourth proportional to 138,653.13, 207,931.08 and 38,786.49 is: 58,166.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,653.13 : 207,931.08 = 38,786.49 : x
  2. Step 2: Convert to fraction form
    138,653.13/207,931.08 = 38,786.49/x
  3. Step 3: Cross multiply
    138,653.13x = 207,931.08 × 38,786.49
  4. Step 4: Simplify right side
    138,653.13x = 8,064,916,755.11
  5. Step 5: Solve for x
    x = 8,064,916,755.11/138,653.13
  6. Step 6: Final answer
    x = 58,166.14

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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.