Home / 100,106.68-138,143.06-54,783.52

Finding the Fourth Proportional to 100,106.68, 138,143.06 and 54,783.52

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Solution

The fourth proportional to 100,106.68, 138,143.06 and 54,783.52 is: 75,598.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,106.68 : 138,143.06 = 54,783.52 : x
  2. Step 2: Convert to fraction form
    100,106.68/138,143.06 = 54,783.52/x
  3. Step 3: Cross multiply
    100,106.68x = 138,143.06 × 54,783.52
  4. Step 4: Simplify right side
    100,106.68x = 7,567,963,090.37
  5. Step 5: Solve for x
    x = 7,567,963,090.37/100,106.68
  6. Step 6: Final answer
    x = 75,598.98

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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.