Home / 123,087.28-169,860.48-66,498.64

Finding the Fourth Proportional to 123,087.28, 169,860.48 and 66,498.64

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Solution

The fourth proportional to 123,087.28, 169,860.48 and 66,498.64 is: 91,768.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,087.28 : 169,860.48 = 66,498.64 : x
  2. Step 2: Convert to fraction form
    123,087.28/169,860.48 = 66,498.64/x
  3. Step 3: Cross multiply
    123,087.28x = 169,860.48 × 66,498.64
  4. Step 4: Simplify right side
    123,087.28x = 11,295,490,909.75
  5. Step 5: Solve for x
    x = 11,295,490,909.75/123,087.28
  6. Step 6: Final answer
    x = 91,768.14

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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.