Home / 147,137.09-203,055.84-86,710.28

Finding the Fourth Proportional to 147,137.09, 203,055.84 and 86,710.28

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Solution

The fourth proportional to 147,137.09, 203,055.84 and 86,710.28 is: 119,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,137.09 : 203,055.84 = 86,710.28 : x
  2. Step 2: Convert to fraction form
    147,137.09/203,055.84 = 86,710.28/x
  3. Step 3: Cross multiply
    147,137.09x = 203,055.84 × 86,710.28
  4. Step 4: Simplify right side
    147,137.09x = 17,607,027,726.76
  5. Step 5: Solve for x
    x = 17,607,027,726.76/147,137.09
  6. Step 6: Final answer
    x = 119,664.11

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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.