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Finding the Fourth Proportional to 121,265.81, 166,134.95 and 116,720.48

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Solution

The fourth proportional to 121,265.81, 166,134.95 and 116,720.48 is: 159,907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,265.81 : 166,134.95 = 116,720.48 : x
  2. Step 2: Convert to fraction form
    121,265.81/166,134.95 = 116,720.48/x
  3. Step 3: Cross multiply
    121,265.81x = 166,134.95 × 116,720.48
  4. Step 4: Simplify right side
    121,265.81x = 19,391,349,694.50
  5. Step 5: Solve for x
    x = 19,391,349,694.50/121,265.81
  6. Step 6: Final answer
    x = 159,907.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.