Home / 147,281.31-203,256.09-86,887.26

Finding the Fourth Proportional to 147,281.31, 203,256.09 and 86,887.26

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Solution

The fourth proportional to 147,281.31, 203,256.09 and 86,887.26 is: 119,909.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,281.31 : 203,256.09 = 86,887.26 : x
  2. Step 2: Convert to fraction form
    147,281.31/203,256.09 = 86,887.26/x
  3. Step 3: Cross multiply
    147,281.31x = 203,256.09 × 86,887.26
  4. Step 4: Simplify right side
    147,281.31x = 17,660,364,738.41
  5. Step 5: Solve for x
    x = 17,660,364,738.41/147,281.31
  6. Step 6: Final answer
    x = 119,909.07

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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.