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Finding the Fourth Proportional to 109,399.88, 149,987.29 and 107,407.08

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Solution

The fourth proportional to 109,399.88, 149,987.29 and 107,407.08 is: 147,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,399.88 : 149,987.29 = 107,407.08 : x
  2. Step 2: Convert to fraction form
    109,399.88/149,987.29 = 107,407.08/x
  3. Step 3: Cross multiply
    109,399.88x = 149,987.29 × 107,407.08
  4. Step 4: Simplify right side
    109,399.88x = 16,109,696,856.01
  5. Step 5: Solve for x
    x = 16,109,696,856.01/109,399.88
  6. Step 6: Final answer
    x = 147,255.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.