Home / 101,004.18-139,386.76-55,683.78

Finding the Fourth Proportional to 101,004.18, 139,386.76 and 55,683.78

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Solution

The fourth proportional to 101,004.18, 139,386.76 and 55,683.78 is: 76,844.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,004.18 : 139,386.76 = 55,683.78 : x
  2. Step 2: Convert to fraction form
    101,004.18/139,386.76 = 55,683.78/x
  3. Step 3: Cross multiply
    101,004.18x = 139,386.76 × 55,683.78
  4. Step 4: Simplify right side
    101,004.18x = 7,761,581,678.75
  5. Step 5: Solve for x
    x = 7,761,581,678.75/101,004.18
  6. Step 6: Final answer
    x = 76,844.16

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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.