Home / 137,981.58-190,415.12-77,554.77

Finding the Fourth Proportional to 137,981.58, 190,415.12 and 77,554.77

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Solution

The fourth proportional to 137,981.58, 190,415.12 and 77,554.77 is: 107,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,981.58 : 190,415.12 = 77,554.77 : x
  2. Step 2: Convert to fraction form
    137,981.58/190,415.12 = 77,554.77/x
  3. Step 3: Cross multiply
    137,981.58x = 190,415.12 × 77,554.77
  4. Step 4: Simplify right side
    137,981.58x = 14,767,600,448.35
  5. Step 5: Solve for x
    x = 14,767,600,448.35/137,981.58
  6. Step 6: Final answer
    x = 107,025.88

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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.