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Finding the Fourth Proportional to 100,104.55, 138,130.59 and 59,809.75

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Solution

The fourth proportional to 100,104.55, 138,130.59 and 59,809.75 is: 82,529.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,104.55 : 138,130.59 = 59,809.75 : x
  2. Step 2: Convert to fraction form
    100,104.55/138,130.59 = 59,809.75/x
  3. Step 3: Cross multiply
    100,104.55x = 138,130.59 × 59,809.75
  4. Step 4: Simplify right side
    100,104.55x = 8,261,556,055.25
  5. Step 5: Solve for x
    x = 8,261,556,055.25/100,104.55
  6. Step 6: Final answer
    x = 82,529.28

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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.