Home / 103,139.04-142,357.68-63,372

Finding the Fourth Proportional to 103,139.04, 142,357.68 and 63,372

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Solution

The fourth proportional to 103,139.04, 142,357.68 and 63,372 is: 87,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,139.04 : 142,357.68 = 63,372 : x
  2. Step 2: Convert to fraction form
    103,139.04/142,357.68 = 63,372/x
  3. Step 3: Cross multiply
    103,139.04x = 142,357.68 × 63,372
  4. Step 4: Simplify right side
    103,139.04x = 9,021,490,896.96
  5. Step 5: Solve for x
    x = 9,021,490,896.96/103,139.04
  6. Step 6: Final answer
    x = 87,469.22

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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.