Home / 100,525.09-138,726.74-55,203.77

Finding the Fourth Proportional to 100,525.09, 138,726.74 and 55,203.77

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Solution

The fourth proportional to 100,525.09, 138,726.74 and 55,203.77 is: 76,182.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,525.09 : 138,726.74 = 55,203.77 : x
  2. Step 2: Convert to fraction form
    100,525.09/138,726.74 = 55,203.77/x
  3. Step 3: Cross multiply
    100,525.09x = 138,726.74 × 55,203.77
  4. Step 4: Simplify right side
    100,525.09x = 7,658,239,047.81
  5. Step 5: Solve for x
    x = 7,658,239,047.81/100,525.09
  6. Step 6: Final answer
    x = 76,182.36

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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.