Home / 100,341.10-138,476.93-55,629.10

Finding the Fourth Proportional to 100,341.10, 138,476.93 and 55,629.10

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Solution

The fourth proportional to 100,341.10, 138,476.93 and 55,629.10 is: 76,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,341.10 : 138,476.93 = 55,629.10 : x
  2. Step 2: Convert to fraction form
    100,341.10/138,476.93 = 55,629.10/x
  3. Step 3: Cross multiply
    100,341.10x = 138,476.93 × 55,629.10
  4. Step 4: Simplify right side
    100,341.10x = 7,703,346,986.66
  5. Step 5: Solve for x
    x = 7,703,346,986.66/100,341.10
  6. Step 6: Final answer
    x = 76,771.60

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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.