Home / 100,783.64-139,077.92-55,457.37

Finding the Fourth Proportional to 100,783.64, 139,077.92 and 55,457.37

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Solution

The fourth proportional to 100,783.64, 139,077.92 and 55,457.37 is: 76,529.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,783.64 : 139,077.92 = 55,457.37 : x
  2. Step 2: Convert to fraction form
    100,783.64/139,077.92 = 55,457.37/x
  3. Step 3: Cross multiply
    100,783.64x = 139,077.92 × 55,457.37
  4. Step 4: Simplify right side
    100,783.64x = 7,712,895,390.98
  5. Step 5: Solve for x
    x = 7,712,895,390.98/100,783.64
  6. Step 6: Final answer
    x = 76,529.24

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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.