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Finding the Fourth Proportional to 127,891.44, 176,460.12 and 77,580.72

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Solution

The fourth proportional to 127,891.44, 176,460.12 and 77,580.72 is: 107,043.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,891.44 : 176,460.12 = 77,580.72 : x
  2. Step 2: Convert to fraction form
    127,891.44/176,460.12 = 77,580.72/x
  3. Step 3: Cross multiply
    127,891.44x = 176,460.12 × 77,580.72
  4. Step 4: Simplify right side
    127,891.44x = 13,689,903,160.89
  5. Step 5: Solve for x
    x = 13,689,903,160.89/127,891.44
  6. Step 6: Final answer
    x = 107,043.15

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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.