Home / 129,636.76-194,455.12-31,140.76

Finding the Fourth Proportional to 129,636.76, 194,455.12 and 31,140.76

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Solution

The fourth proportional to 129,636.76, 194,455.12 and 31,140.76 is: 46,711.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,636.76 : 194,455.12 = 31,140.76 : x
  2. Step 2: Convert to fraction form
    129,636.76/194,455.12 = 31,140.76/x
  3. Step 3: Cross multiply
    129,636.76x = 194,455.12 × 31,140.76
  4. Step 4: Simplify right side
    129,636.76x = 6,055,480,222.69
  5. Step 5: Solve for x
    x = 6,055,480,222.69/129,636.76
  6. Step 6: Final answer
    x = 46,711.14

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1.5x scale

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.