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Finding the Fourth Proportional to 127,046.70, 175,400.48 and 79,364.64

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Solution

The fourth proportional to 127,046.70, 175,400.48 and 79,364.64 is: 109,570.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,046.70 : 175,400.48 = 79,364.64 : x
  2. Step 2: Convert to fraction form
    127,046.70/175,400.48 = 79,364.64/x
  3. Step 3: Cross multiply
    127,046.70x = 175,400.48 × 79,364.64
  4. Step 4: Simplify right side
    127,046.70x = 13,920,594,769.22
  5. Step 5: Solve for x
    x = 13,920,594,769.22/127,046.70
  6. Step 6: Final answer
    x = 109,570.69

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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.