Home / 100,861.60-139,189.92-55,541.19

Finding the Fourth Proportional to 100,861.60, 139,189.92 and 55,541.19

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Solution

The fourth proportional to 100,861.60, 139,189.92 and 55,541.19 is: 76,647.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,861.60 : 139,189.92 = 55,541.19 : x
  2. Step 2: Convert to fraction form
    100,861.60/139,189.92 = 55,541.19/x
  3. Step 3: Cross multiply
    100,861.60x = 139,189.92 × 55,541.19
  4. Step 4: Simplify right side
    100,861.60x = 7,730,773,792.80
  5. Step 5: Solve for x
    x = 7,730,773,792.80/100,861.60
  6. Step 6: Final answer
    x = 76,647.34

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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.