Home / 101,127.72-139,528.26-65,319.24

Finding the Fourth Proportional to 101,127.72, 139,528.26 and 65,319.24

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Solution

The fourth proportional to 101,127.72, 139,528.26 and 65,319.24 is: 90,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,127.72 : 139,528.26 = 65,319.24 : x
  2. Step 2: Convert to fraction form
    101,127.72/139,528.26 = 65,319.24/x
  3. Step 3: Cross multiply
    101,127.72x = 139,528.26 × 65,319.24
  4. Step 4: Simplify right side
    101,127.72x = 9,113,879,901.72
  5. Step 5: Solve for x
    x = 9,113,879,901.72/101,127.72
  6. Step 6: Final answer
    x = 90,122.47

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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.