Home / 100,634.84-138,878.44-55,312.46

Finding the Fourth Proportional to 100,634.84, 138,878.44 and 55,312.46

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Solution

The fourth proportional to 100,634.84, 138,878.44 and 55,312.46 is: 76,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,634.84 : 138,878.44 = 55,312.46 : x
  2. Step 2: Convert to fraction form
    100,634.84/138,878.44 = 55,312.46/x
  3. Step 3: Cross multiply
    100,634.84x = 138,878.44 × 55,312.46
  4. Step 4: Simplify right side
    100,634.84x = 7,681,708,157.36
  5. Step 5: Solve for x
    x = 7,681,708,157.36/100,634.84
  6. Step 6: Final answer
    x = 76,332.49

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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.