Home / 170,931.20-255,898.50-99,635.72

Finding the Fourth Proportional to 170,931.20, 255,898.50 and 99,635.72

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Solution

The fourth proportional to 170,931.20, 255,898.50 and 99,635.72 is: 149,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,931.20 : 255,898.50 = 99,635.72 : x
  2. Step 2: Convert to fraction form
    170,931.20/255,898.50 = 99,635.72/x
  3. Step 3: Cross multiply
    170,931.20x = 255,898.50 × 99,635.72
  4. Step 4: Simplify right side
    170,931.20x = 25,496,631,294.42
  5. Step 5: Solve for x
    x = 25,496,631,294.42/170,931.20
  6. Step 6: Final answer
    x = 149,163.12

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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.