Home / 128,302.85-192,465.05-47,271.94

Finding the Fourth Proportional to 128,302.85, 192,465.05 and 47,271.94

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Solution

The fourth proportional to 128,302.85, 192,465.05 and 47,271.94 is: 70,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,302.85 : 192,465.05 = 47,271.94 : x
  2. Step 2: Convert to fraction form
    128,302.85/192,465.05 = 47,271.94/x
  3. Step 3: Cross multiply
    128,302.85x = 192,465.05 × 47,271.94
  4. Step 4: Simplify right side
    128,302.85x = 9,098,195,578.17
  5. Step 5: Solve for x
    x = 9,098,195,578.17/128,302.85
  6. Step 6: Final answer
    x = 70,911.87

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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.