Home / 105,303.06-145,317.87-57,556.38

Finding the Fourth Proportional to 105,303.06, 145,317.87 and 57,556.38

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Solution

The fourth proportional to 105,303.06, 145,317.87 and 57,556.38 is: 79,427.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,303.06 : 145,317.87 = 57,556.38 : x
  2. Step 2: Convert to fraction form
    105,303.06/145,317.87 = 57,556.38/x
  3. Step 3: Cross multiply
    105,303.06x = 145,317.87 × 57,556.38
  4. Step 4: Simplify right side
    105,303.06x = 8,363,970,546.51
  5. Step 5: Solve for x
    x = 8,363,970,546.51/105,303.06
  6. Step 6: Final answer
    x = 79,427.61

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1.5x scale

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.