Home / 100,397.24-138,549.26-55,075.31

Finding the Fourth Proportional to 100,397.24, 138,549.26 and 55,075.31

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Solution

The fourth proportional to 100,397.24, 138,549.26 and 55,075.31 is: 76,004.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,397.24 : 138,549.26 = 55,075.31 : x
  2. Step 2: Convert to fraction form
    100,397.24/138,549.26 = 55,075.31/x
  3. Step 3: Cross multiply
    100,397.24x = 138,549.26 × 55,075.31
  4. Step 4: Simplify right side
    100,397.24x = 7,630,643,444.77
  5. Step 5: Solve for x
    x = 7,630,643,444.77/100,397.24
  6. Step 6: Final answer
    x = 76,004.51

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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.