Home / 128,146.17-192,147.27-53,215.91

Finding the Fourth Proportional to 128,146.17, 192,147.27 and 53,215.91

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Solution

The fourth proportional to 128,146.17, 192,147.27 and 53,215.91 is: 79,793.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.17 : 192,147.27 = 53,215.91 : x
  2. Step 2: Convert to fraction form
    128,146.17/192,147.27 = 53,215.91/x
  3. Step 3: Cross multiply
    128,146.17x = 192,147.27 × 53,215.91
  4. Step 4: Simplify right side
    128,146.17x = 10,225,291,827.07
  5. Step 5: Solve for x
    x = 10,225,291,827.07/128,146.17
  6. Step 6: Final answer
    x = 79,793.97

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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.