Home / 103,170,971.12-142,375,935.12-56,760,228.68

Finding the Fourth Proportional to 103,170,971.12, 142,375,935.12 and 56,760,228.68

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Solution

The fourth proportional to 103,170,971.12, 142,375,935.12 and 56,760,228.68 is: 78,329,112.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,170,971.12 : 142,375,935.12 = 56,760,228.68 : x
  2. Step 2: Convert to fraction form
    103,170,971.12/142,375,935.12 = 56,760,228.68/x
  3. Step 3: Cross multiply
    103,170,971.12x = 142,375,935.12 × 56,760,228.68
  4. Step 4: Simplify right side
    103,170,971.12x = 8,081,290,635,940,043
  5. Step 5: Solve for x
    x = 8,081,290,635,940,043/103,170,971.12
  6. Step 6: Final answer
    x = 78,329,112.81

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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.