Home / 103,861.64-143,329.16-56,115.08

Finding the Fourth Proportional to 103,861.64, 143,329.16 and 56,115.08

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Solution

The fourth proportional to 103,861.64, 143,329.16 and 56,115.08 is: 77,438.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,861.64 : 143,329.16 = 56,115.08 : x
  2. Step 2: Convert to fraction form
    103,861.64/143,329.16 = 56,115.08/x
  3. Step 3: Cross multiply
    103,861.64x = 143,329.16 × 56,115.08
  4. Step 4: Simplify right side
    103,861.64x = 8,042,927,240.86
  5. Step 5: Solve for x
    x = 8,042,927,240.86/103,861.64
  6. Step 6: Final answer
    x = 77,438.86

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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.