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Finding the Fourth Proportional to 101,003.72, 139,394.99 and 75,465.77

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Solution

The fourth proportional to 101,003.72, 139,394.99 and 75,465.77 is: 104,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,003.72 : 139,394.99 = 75,465.77 : x
  2. Step 2: Convert to fraction form
    101,003.72/139,394.99 = 75,465.77/x
  3. Step 3: Cross multiply
    101,003.72x = 139,394.99 × 75,465.77
  4. Step 4: Simplify right side
    101,003.72x = 10,519,550,254.49
  5. Step 5: Solve for x
    x = 10,519,550,254.49/101,003.72
  6. Step 6: Final answer
    x = 104,150.13

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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.