Home / 243,748.28-365,621.68-85,938.68

Finding the Fourth Proportional to 243,748.28, 365,621.68 and 85,938.68

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Solution

The fourth proportional to 243,748.28, 365,621.68 and 85,938.68 is: 128,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,748.28 : 365,621.68 = 85,938.68 : x
  2. Step 2: Convert to fraction form
    243,748.28/365,621.68 = 85,938.68/x
  3. Step 3: Cross multiply
    243,748.28x = 365,621.68 × 85,938.68
  4. Step 4: Simplify right side
    243,748.28x = 31,421,044,558.58
  5. Step 5: Solve for x
    x = 31,421,044,558.58/243,748.28
  6. Step 6: Final answer
    x = 128,907.76

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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.