Home / 103,543.50-142,537.41-76,635.30

Finding the Fourth Proportional to 103,543.50, 142,537.41 and 76,635.30

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Solution

The fourth proportional to 103,543.50, 142,537.41 and 76,635.30 is: 105,495.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,543.50 : 142,537.41 = 76,635.30 : x
  2. Step 2: Convert to fraction form
    103,543.50/142,537.41 = 76,635.30/x
  3. Step 3: Cross multiply
    103,543.50x = 142,537.41 × 76,635.30
  4. Step 4: Simplify right side
    103,543.50x = 10,923,397,176.57
  5. Step 5: Solve for x
    x = 10,923,397,176.57/103,543.50
  6. Step 6: Final answer
    x = 105,495.73

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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.