Home / 123,177.28-169,985.08-66,588.66

Finding the Fourth Proportional to 123,177.28, 169,985.08 and 66,588.66

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Solution

The fourth proportional to 123,177.28, 169,985.08 and 66,588.66 is: 91,892.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,177.28 : 169,985.08 = 66,588.66 : x
  2. Step 2: Convert to fraction form
    123,177.28/169,985.08 = 66,588.66/x
  3. Step 3: Cross multiply
    123,177.28x = 169,985.08 × 66,588.66
  4. Step 4: Simplify right side
    123,177.28x = 11,319,078,697.19
  5. Step 5: Solve for x
    x = 11,319,078,697.19/123,177.28
  6. Step 6: Final answer
    x = 91,892.59

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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.