Home / 143,787.60-215,681.40-135,039.60

Finding the Fourth Proportional to 143,787.60, 215,681.40 and 135,039.60

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Solution

The fourth proportional to 143,787.60, 215,681.40 and 135,039.60 is: 202,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,787.60 : 215,681.40 = 135,039.60 : x
  2. Step 2: Convert to fraction form
    143,787.60/215,681.40 = 135,039.60/x
  3. Step 3: Cross multiply
    143,787.60x = 215,681.40 × 135,039.60
  4. Step 4: Simplify right side
    143,787.60x = 29,125,529,983.44
  5. Step 5: Solve for x
    x = 29,125,529,983.44/143,787.60
  6. Step 6: Final answer
    x = 202,559.40

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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.