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Finding the Fourth Proportional to 104,306.76, 143,943.12 and 56,559.96

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Solution

The fourth proportional to 104,306.76, 143,943.12 and 56,559.96 is: 78,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,306.76 : 143,943.12 = 56,559.96 : x
  2. Step 2: Convert to fraction form
    104,306.76/143,943.12 = 56,559.96/x
  3. Step 3: Cross multiply
    104,306.76x = 143,943.12 × 56,559.96
  4. Step 4: Simplify right side
    104,306.76x = 8,141,417,109.48
  5. Step 5: Solve for x
    x = 8,141,417,109.48/104,306.76
  6. Step 6: Final answer
    x = 78,052.63

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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.