Home / 100,163.51-138,225.64-54,841.49

Finding the Fourth Proportional to 100,163.51, 138,225.64 and 54,841.49

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Solution

The fourth proportional to 100,163.51, 138,225.64 and 54,841.49 is: 75,681.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,163.51 : 138,225.64 = 54,841.49 : x
  2. Step 2: Convert to fraction form
    100,163.51/138,225.64 = 54,841.49/x
  3. Step 3: Cross multiply
    100,163.51x = 138,225.64 × 54,841.49
  4. Step 4: Simplify right side
    100,163.51x = 7,580,500,053.80
  5. Step 5: Solve for x
    x = 7,580,500,053.80/100,163.51
  6. Step 6: Final answer
    x = 75,681.25

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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.