Home / 148,931.45-205,520.33-85,256.94

Finding the Fourth Proportional to 148,931.45, 205,520.33 and 85,256.94

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Solution

The fourth proportional to 148,931.45, 205,520.33 and 85,256.94 is: 117,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,931.45 : 205,520.33 = 85,256.94 : x
  2. Step 2: Convert to fraction form
    148,931.45/205,520.33 = 85,256.94/x
  3. Step 3: Cross multiply
    148,931.45x = 205,520.33 × 85,256.94
  4. Step 4: Simplify right side
    148,931.45x = 17,522,034,017.31
  5. Step 5: Solve for x
    x = 17,522,034,017.31/148,931.45
  6. Step 6: Final answer
    x = 117,651.68

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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.