Home / 100,415.55-138,574.86-55,092.69

Finding the Fourth Proportional to 100,415.55, 138,574.86 and 55,092.69

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Solution

The fourth proportional to 100,415.55, 138,574.86 and 55,092.69 is: 76,028.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,415.55 : 138,574.86 = 55,092.69 : x
  2. Step 2: Convert to fraction form
    100,415.55/138,574.86 = 55,092.69/x
  3. Step 3: Cross multiply
    100,415.55x = 138,574.86 × 55,092.69
  4. Step 4: Simplify right side
    100,415.55x = 7,634,461,803.77
  5. Step 5: Solve for x
    x = 7,634,461,803.77/100,415.55
  6. Step 6: Final answer
    x = 76,028.68

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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.