Home / 103,854.56-143,319.36-56,107.88

Finding the Fourth Proportional to 103,854.56, 143,319.36 and 56,107.88

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Solution

The fourth proportional to 103,854.56, 143,319.36 and 56,107.88 is: 77,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,854.56 : 143,319.36 = 56,107.88 : x
  2. Step 2: Convert to fraction form
    103,854.56/143,319.36 = 56,107.88/x
  3. Step 3: Cross multiply
    103,854.56x = 143,319.36 × 56,107.88
  4. Step 4: Simplify right side
    103,854.56x = 8,041,345,452.56
  5. Step 5: Solve for x
    x = 8,041,345,452.56/103,854.56
  6. Step 6: Final answer
    x = 77,428.91

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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.