Home / 107,640.30-161,272.53-70,140.54

Finding the Fourth Proportional to 107,640.30, 161,272.53 and 70,140.54

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Solution

The fourth proportional to 107,640.30, 161,272.53 and 70,140.54 is: 105,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,640.30 : 161,272.53 = 70,140.54 : x
  2. Step 2: Convert to fraction form
    107,640.30/161,272.53 = 70,140.54/x
  3. Step 3: Cross multiply
    107,640.30x = 161,272.53 × 70,140.54
  4. Step 4: Simplify right side
    107,640.30x = 11,311,742,341.37
  5. Step 5: Solve for x
    x = 11,311,742,341.37/107,640.30
  6. Step 6: Final answer
    x = 105,088.36

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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.