Home / 137,774.58-190,106.28-81,178.26

Finding the Fourth Proportional to 137,774.58, 190,106.28 and 81,178.26

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Solution

The fourth proportional to 137,774.58, 190,106.28 and 81,178.26 is: 112,012.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,774.58 : 190,106.28 = 81,178.26 : x
  2. Step 2: Convert to fraction form
    137,774.58/190,106.28 = 81,178.26/x
  3. Step 3: Cross multiply
    137,774.58x = 190,106.28 × 81,178.26
  4. Step 4: Simplify right side
    137,774.58x = 15,432,497,025.47
  5. Step 5: Solve for x
    x = 15,432,497,025.47/137,774.58
  6. Step 6: Final answer
    x = 112,012.66

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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.