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Finding the Fourth Proportional to 123,167.28, 169,970.76 and 66,578.67

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Solution

The fourth proportional to 123,167.28, 169,970.76 and 66,578.67 is: 91,878.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,167.28 : 169,970.76 = 66,578.67 : x
  2. Step 2: Convert to fraction form
    123,167.28/169,970.76 = 66,578.67/x
  3. Step 3: Cross multiply
    123,167.28x = 169,970.76 × 66,578.67
  4. Step 4: Simplify right side
    123,167.28x = 11,316,427,139.69
  5. Step 5: Solve for x
    x = 11,316,427,139.69/123,167.28
  6. Step 6: Final answer
    x = 91,878.52

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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.