Home / 143,823.70-215,735.55-91,465.30

Finding the Fourth Proportional to 143,823.70, 215,735.55 and 91,465.30

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Solution

The fourth proportional to 143,823.70, 215,735.55 and 91,465.30 is: 137,197.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,823.70 : 215,735.55 = 91,465.30 : x
  2. Step 2: Convert to fraction form
    143,823.70/215,735.55 = 91,465.30/x
  3. Step 3: Cross multiply
    143,823.70x = 215,735.55 × 91,465.30
  4. Step 4: Simplify right side
    143,823.70x = 19,732,316,801.42
  5. Step 5: Solve for x
    x = 19,732,316,801.42/143,823.70
  6. Step 6: Final answer
    x = 137,197.95

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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.