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Finding the Fourth Proportional to 123,891.67, 170,969.56 and 67,303.45

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Solution

The fourth proportional to 123,891.67, 170,969.56 and 67,303.45 is: 92,878.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,891.67 : 170,969.56 = 67,303.45 : x
  2. Step 2: Convert to fraction form
    123,891.67/170,969.56 = 67,303.45/x
  3. Step 3: Cross multiply
    123,891.67x = 170,969.56 × 67,303.45
  4. Step 4: Simplify right side
    123,891.67x = 11,506,841,232.98
  5. Step 5: Solve for x
    x = 11,506,841,232.98/123,891.67
  6. Step 6: Final answer
    x = 92,878.25

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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.