Home / 128,130.86-192,265.25-53,302.66

Finding the Fourth Proportional to 128,130.86, 192,265.25 and 53,302.66

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Solution

The fourth proportional to 128,130.86, 192,265.25 and 53,302.66 is: 79,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,130.86 : 192,265.25 = 53,302.66 : x
  2. Step 2: Convert to fraction form
    128,130.86/192,265.25 = 53,302.66/x
  3. Step 3: Cross multiply
    128,130.86x = 192,265.25 × 53,302.66
  4. Step 4: Simplify right side
    128,130.86x = 10,248,248,503.39
  5. Step 5: Solve for x
    x = 10,248,248,503.39/128,130.86
  6. Step 6: Final answer
    x = 79,982.67

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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.