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Finding the Fourth Proportional to 104,335.56, 143,868.96 and 77,527.80

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Solution

The fourth proportional to 104,335.56, 143,868.96 and 77,527.80 is: 106,903.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,335.56 : 143,868.96 = 77,527.80 : x
  2. Step 2: Convert to fraction form
    104,335.56/143,868.96 = 77,527.80/x
  3. Step 3: Cross multiply
    104,335.56x = 143,868.96 × 77,527.80
  4. Step 4: Simplify right side
    104,335.56x = 11,153,843,957.09
  5. Step 5: Solve for x
    x = 11,153,843,957.09/104,335.56
  6. Step 6: Final answer
    x = 106,903.57

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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.