Home / 102,931.20-154,281.60-43,756.80

Finding the Fourth Proportional to 102,931.20, 154,281.60 and 43,756.80

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Solution

The fourth proportional to 102,931.20, 154,281.60 and 43,756.80 is: 65,586.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,931.20 : 154,281.60 = 43,756.80 : x
  2. Step 2: Convert to fraction form
    102,931.20/154,281.60 = 43,756.80/x
  3. Step 3: Cross multiply
    102,931.20x = 154,281.60 × 43,756.80
  4. Step 4: Simplify right side
    102,931.20x = 6,750,869,114.88
  5. Step 5: Solve for x
    x = 6,750,869,114.88/102,931.20
  6. Step 6: Final answer
    x = 65,586.23

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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.