Home / 105,516.20-145,609.04-57,766.70

Finding the Fourth Proportional to 105,516.20, 145,609.04 and 57,766.70

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Solution

The fourth proportional to 105,516.20, 145,609.04 and 57,766.70 is: 79,716.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,516.20 : 145,609.04 = 57,766.70 : x
  2. Step 2: Convert to fraction form
    105,516.20/145,609.04 = 57,766.70/x
  3. Step 3: Cross multiply
    105,516.20x = 145,609.04 × 57,766.70
  4. Step 4: Simplify right side
    105,516.20x = 8,411,354,239.41
  5. Step 5: Solve for x
    x = 8,411,354,239.41/105,516.20
  6. Step 6: Final answer
    x = 79,716.23

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1.5x scale

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.