Home / 128,141.39-192,227.48-53,312.18

Finding the Fourth Proportional to 128,141.39, 192,227.48 and 53,312.18

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Solution

The fourth proportional to 128,141.39, 192,227.48 and 53,312.18 is: 79,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,141.39 : 192,227.48 = 53,312.18 : x
  2. Step 2: Convert to fraction form
    128,141.39/192,227.48 = 53,312.18/x
  3. Step 3: Cross multiply
    128,141.39x = 192,227.48 × 53,312.18
  4. Step 4: Simplify right side
    128,141.39x = 10,248,064,986.93
  5. Step 5: Solve for x
    x = 10,248,064,986.93/128,141.39
  6. Step 6: Final answer
    x = 79,974.67

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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.