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Finding the Fourth Proportional to 127,015.74, 175,284.13 and 69,651.65

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Solution

The fourth proportional to 127,015.74, 175,284.13 and 69,651.65 is: 96,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,015.74 : 175,284.13 = 69,651.65 : x
  2. Step 2: Convert to fraction form
    127,015.74/175,284.13 = 69,651.65/x
  3. Step 3: Cross multiply
    127,015.74x = 175,284.13 × 69,651.65
  4. Step 4: Simplify right side
    127,015.74x = 12,208,828,319.82
  5. Step 5: Solve for x
    x = 12,208,828,319.82/127,015.74
  6. Step 6: Final answer
    x = 96,120.59

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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.