Home / 105,583.28-158,006.75-86,386.05

Finding the Fourth Proportional to 105,583.28, 158,006.75 and 86,386.05

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Solution

The fourth proportional to 105,583.28, 158,006.75 and 86,386.05 is: 129,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,583.28 : 158,006.75 = 86,386.05 : x
  2. Step 2: Convert to fraction form
    105,583.28/158,006.75 = 86,386.05/x
  3. Step 3: Cross multiply
    105,583.28x = 158,006.75 × 86,386.05
  4. Step 4: Simplify right side
    105,583.28x = 13,649,579,005.84
  5. Step 5: Solve for x
    x = 13,649,579,005.84/105,583.28
  6. Step 6: Final answer
    x = 129,277.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.