Home / 101,005.74-139,387.68-55,683.36

Finding the Fourth Proportional to 101,005.74, 139,387.68 and 55,683.36

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Solution

The fourth proportional to 101,005.74, 139,387.68 and 55,683.36 is: 76,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,005.74 : 139,387.68 = 55,683.36 : x
  2. Step 2: Convert to fraction form
    101,005.74/139,387.68 = 55,683.36/x
  3. Step 3: Cross multiply
    101,005.74x = 139,387.68 × 55,683.36
  4. Step 4: Simplify right side
    101,005.74x = 7,761,574,365.00
  5. Step 5: Solve for x
    x = 7,761,574,365.00/101,005.74
  6. Step 6: Final answer
    x = 76,842.90

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1.5x scale

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.