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Finding the Fourth Proportional to 127,859.80, 176,447.30 and 74,176.80

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Solution

The fourth proportional to 127,859.80, 176,447.30 and 74,176.80 is: 102,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,859.80 : 176,447.30 = 74,176.80 : x
  2. Step 2: Convert to fraction form
    127,859.80/176,447.30 = 74,176.80/x
  3. Step 3: Cross multiply
    127,859.80x = 176,447.30 × 74,176.80
  4. Step 4: Simplify right side
    127,859.80x = 13,088,296,082.64
  5. Step 5: Solve for x
    x = 13,088,296,082.64/127,859.80
  6. Step 6: Final answer
    x = 102,364.43

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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.