Home / 137,810.76-190,172.70-77,380.38

Finding the Fourth Proportional to 137,810.76, 190,172.70 and 77,380.38

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Solution

The fourth proportional to 137,810.76, 190,172.70 and 77,380.38 is: 106,781.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,810.76 : 190,172.70 = 77,380.38 : x
  2. Step 2: Convert to fraction form
    137,810.76/190,172.70 = 77,380.38/x
  3. Step 3: Cross multiply
    137,810.76x = 190,172.70 × 77,380.38
  4. Step 4: Simplify right side
    137,810.76x = 14,715,635,791.63
  5. Step 5: Solve for x
    x = 14,715,635,791.63/137,810.76
  6. Step 6: Final answer
    x = 106,781.47

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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.