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Finding the Fourth Proportional to 123,468.77, 170,386.91 and 66,880.14

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Solution

The fourth proportional to 123,468.77, 170,386.91 and 66,880.14 is: 92,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,468.77 : 170,386.91 = 66,880.14 : x
  2. Step 2: Convert to fraction form
    123,468.77/170,386.91 = 66,880.14/x
  3. Step 3: Cross multiply
    123,468.77x = 170,386.91 × 66,880.14
  4. Step 4: Simplify right side
    123,468.77x = 11,395,500,060.57
  5. Step 5: Solve for x
    x = 11,395,500,060.57/123,468.77
  6. Step 6: Final answer
    x = 92,294.60

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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.