Home / 123,461.12-170,370.68-77,544.47

Finding the Fourth Proportional to 123,461.12, 170,370.68 and 77,544.47

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Solution

The fourth proportional to 123,461.12, 170,370.68 and 77,544.47 is: 107,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,461.12 : 170,370.68 = 77,544.47 : x
  2. Step 2: Convert to fraction form
    123,461.12/170,370.68 = 77,544.47/x
  3. Step 3: Cross multiply
    123,461.12x = 170,370.68 × 77,544.47
  4. Step 4: Simplify right side
    123,461.12x = 13,211,302,844.56
  5. Step 5: Solve for x
    x = 13,211,302,844.56/123,461.12
  6. Step 6: Final answer
    x = 107,007.80

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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.