Home / 143,115.81-197,495.98-85,787.52

Finding the Fourth Proportional to 143,115.81, 197,495.98 and 85,787.52

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Solution

The fourth proportional to 143,115.81, 197,495.98 and 85,787.52 is: 118,384.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,115.81 : 197,495.98 = 85,787.52 : x
  2. Step 2: Convert to fraction form
    143,115.81/197,495.98 = 85,787.52/x
  3. Step 3: Cross multiply
    143,115.81x = 197,495.98 × 85,787.52
  4. Step 4: Simplify right side
    143,115.81x = 16,942,690,334.17
  5. Step 5: Solve for x
    x = 16,942,690,334.17/143,115.81
  6. Step 6: Final answer
    x = 118,384.48

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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.