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Finding the Fourth Proportional to 143,925.53, 215,889.62 and 55,157.90

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Solution

The fourth proportional to 143,925.53, 215,889.62 and 55,157.90 is: 82,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,925.53 : 215,889.62 = 55,157.90 : x
  2. Step 2: Convert to fraction form
    143,925.53/215,889.62 = 55,157.90/x
  3. Step 3: Cross multiply
    143,925.53x = 215,889.62 × 55,157.90
  4. Step 4: Simplify right side
    143,925.53x = 11,908,016,715.76
  5. Step 5: Solve for x
    x = 11,908,016,715.76/143,925.53
  6. Step 6: Final answer
    x = 82,737.35

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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.