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Finding the Fourth Proportional to 104,161.77, 143,743.19 and 56,415.11

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Solution

The fourth proportional to 104,161.77, 143,743.19 and 56,415.11 is: 77,852.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,161.77 : 143,743.19 = 56,415.11 : x
  2. Step 2: Convert to fraction form
    104,161.77/143,743.19 = 56,415.11/x
  3. Step 3: Cross multiply
    104,161.77x = 143,743.19 × 56,415.11
  4. Step 4: Simplify right side
    104,161.77x = 8,109,286,874.81
  5. Step 5: Solve for x
    x = 8,109,286,874.81/104,161.77
  6. Step 6: Final answer
    x = 77,852.81

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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.