Home / 103,921.20-143,410.80-56,174.64

Finding the Fourth Proportional to 103,921.20, 143,410.80 and 56,174.64

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Solution

The fourth proportional to 103,921.20, 143,410.80 and 56,174.64 is: 77,520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,921.20 : 143,410.80 = 56,174.64 : x
  2. Step 2: Convert to fraction form
    103,921.20/143,410.80 = 56,174.64/x
  3. Step 3: Cross multiply
    103,921.20x = 143,410.80 × 56,174.64
  4. Step 4: Simplify right side
    103,921.20x = 8,056,050,062.11
  5. Step 5: Solve for x
    x = 8,056,050,062.11/103,921.20
  6. Step 6: Final answer
    x = 77,520.76

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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.