Home / 100,959.35-139,323.26-55,637.69

Finding the Fourth Proportional to 100,959.35, 139,323.26 and 55,637.69

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Solution

The fourth proportional to 100,959.35, 139,323.26 and 55,637.69 is: 76,779.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,959.35 : 139,323.26 = 55,637.69 : x
  2. Step 2: Convert to fraction form
    100,959.35/139,323.26 = 55,637.69/x
  3. Step 3: Cross multiply
    100,959.35x = 139,323.26 × 55,637.69
  4. Step 4: Simplify right side
    100,959.35x = 7,751,624,071.48
  5. Step 5: Solve for x
    x = 7,751,624,071.48/100,959.35
  6. Step 6: Final answer
    x = 76,779.66

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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.