Home / 101,142.36-139,576.44-56,430.36

Finding the Fourth Proportional to 101,142.36, 139,576.44 and 56,430.36

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Solution

The fourth proportional to 101,142.36, 139,576.44 and 56,430.36 is: 77,873.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,142.36 : 139,576.44 = 56,430.36 : x
  2. Step 2: Convert to fraction form
    101,142.36/139,576.44 = 56,430.36/x
  3. Step 3: Cross multiply
    101,142.36x = 139,576.44 × 56,430.36
  4. Step 4: Simplify right side
    101,142.36x = 7,876,348,756.72
  5. Step 5: Solve for x
    x = 7,876,348,756.72/101,142.36
  6. Step 6: Final answer
    x = 77,873.89

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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.