Home / 127,980.06-176,611.95-71,391.48

Finding the Fourth Proportional to 127,980.06, 176,611.95 and 71,391.48

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Solution

The fourth proportional to 127,980.06, 176,611.95 and 71,391.48 is: 98,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,980.06 : 176,611.95 = 71,391.48 : x
  2. Step 2: Convert to fraction form
    127,980.06/176,611.95 = 71,391.48/x
  3. Step 3: Cross multiply
    127,980.06x = 176,611.95 × 71,391.48
  4. Step 4: Simplify right side
    127,980.06x = 12,608,588,496.19
  5. Step 5: Solve for x
    x = 12,608,588,496.19/127,980.06
  6. Step 6: Final answer
    x = 98,519.95

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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.