Home / 101,010.38-139,386.53-55,688.22

Finding the Fourth Proportional to 101,010.38, 139,386.53 and 55,688.22

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Solution

The fourth proportional to 101,010.38, 139,386.53 and 55,688.22 is: 76,845.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,010.38 : 139,386.53 = 55,688.22 : x
  2. Step 2: Convert to fraction form
    101,010.38/139,386.53 = 55,688.22/x
  3. Step 3: Cross multiply
    101,010.38x = 139,386.53 × 55,688.22
  4. Step 4: Simplify right side
    101,010.38x = 7,762,187,469.24
  5. Step 5: Solve for x
    x = 7,762,187,469.24/101,010.38
  6. Step 6: Final answer
    x = 76,845.45

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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.