Home / 143,403.28-215,103.09-64,461.69

Finding the Fourth Proportional to 143,403.28, 215,103.09 and 64,461.69

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Solution

The fourth proportional to 143,403.28, 215,103.09 and 64,461.69 is: 96,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.28 : 215,103.09 = 64,461.69 : x
  2. Step 2: Convert to fraction form
    143,403.28/215,103.09 = 64,461.69/x
  3. Step 3: Cross multiply
    143,403.28x = 215,103.09 × 64,461.69
  4. Step 4: Simplify right side
    143,403.28x = 13,865,908,947.35
  5. Step 5: Solve for x
    x = 13,865,908,947.35/143,403.28
  6. Step 6: Final answer
    x = 96,691.72

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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.