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Finding the Fourth Proportional to 123,307.77, 170,165.16 and 66,719.16

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Solution

The fourth proportional to 123,307.77, 170,165.16 and 66,719.16 is: 92,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,307.77 : 170,165.16 = 66,719.16 : x
  2. Step 2: Convert to fraction form
    123,307.77/170,165.16 = 66,719.16/x
  3. Step 3: Cross multiply
    123,307.77x = 170,165.16 × 66,719.16
  4. Step 4: Simplify right side
    123,307.77x = 11,353,276,536.47
  5. Step 5: Solve for x
    x = 11,353,276,536.47/123,307.77
  6. Step 6: Final answer
    x = 92,072.68

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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.