Home / 148,729.74-205,247.28-80,746.71

Finding the Fourth Proportional to 148,729.74, 205,247.28 and 80,746.71

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Solution

The fourth proportional to 148,729.74, 205,247.28 and 80,746.71 is: 111,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,729.74 : 205,247.28 = 80,746.71 : x
  2. Step 2: Convert to fraction form
    148,729.74/205,247.28 = 80,746.71/x
  3. Step 3: Cross multiply
    148,729.74x = 205,247.28 × 80,746.71
  4. Step 4: Simplify right side
    148,729.74x = 16,573,042,596.45
  5. Step 5: Solve for x
    x = 16,573,042,596.45/148,729.74
  6. Step 6: Final answer
    x = 111,430.59

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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.