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Finding the Fourth Proportional to 143,585.70, 215,424.45 and 43,764.90

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Solution

The fourth proportional to 143,585.70, 215,424.45 and 43,764.90 is: 65,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.70 : 215,424.45 = 43,764.90 : x
  2. Step 2: Convert to fraction form
    143,585.70/215,424.45 = 43,764.90/x
  3. Step 3: Cross multiply
    143,585.70x = 215,424.45 × 43,764.90
  4. Step 4: Simplify right side
    143,585.70x = 9,428,029,511.81
  5. Step 5: Solve for x
    x = 9,428,029,511.81/143,585.70
  6. Step 6: Final answer
    x = 65,661.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.