Home / 142,915.65-197,209.47-82,505.85

Finding the Fourth Proportional to 142,915.65, 197,209.47 and 82,505.85

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Solution

The fourth proportional to 142,915.65, 197,209.47 and 82,505.85 is: 113,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,915.65 : 197,209.47 = 82,505.85 : x
  2. Step 2: Convert to fraction form
    142,915.65/197,209.47 = 82,505.85/x
  3. Step 3: Cross multiply
    142,915.65x = 197,209.47 × 82,505.85
  4. Step 4: Simplify right side
    142,915.65x = 16,270,934,950.40
  5. Step 5: Solve for x
    x = 16,270,934,950.40/142,915.65
  6. Step 6: Final answer
    x = 113,849.92

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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.