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Finding the Fourth Proportional to 123,642.84, 170,627.10 and 67,054.20

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Solution

The fourth proportional to 123,642.84, 170,627.10 and 67,054.20 is: 92,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,642.84 : 170,627.10 = 67,054.20 : x
  2. Step 2: Convert to fraction form
    123,642.84/170,627.10 = 67,054.20/x
  3. Step 3: Cross multiply
    123,642.84x = 170,627.10 × 67,054.20
  4. Step 4: Simplify right side
    123,642.84x = 11,441,263,688.82
  5. Step 5: Solve for x
    x = 11,441,263,688.82/123,642.84
  6. Step 6: Final answer
    x = 92,534.79

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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.