Home / 128,335.50-192,536.06-53,430.75

Finding the Fourth Proportional to 128,335.50, 192,536.06 and 53,430.75

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Solution

The fourth proportional to 128,335.50, 192,536.06 and 53,430.75 is: 80,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,335.50 : 192,536.06 = 53,430.75 : x
  2. Step 2: Convert to fraction form
    128,335.50/192,536.06 = 53,430.75/x
  3. Step 3: Cross multiply
    128,335.50x = 192,536.06 × 53,430.75
  4. Step 4: Simplify right side
    128,335.50x = 10,287,346,087.85
  5. Step 5: Solve for x
    x = 10,287,346,087.85/128,335.50
  6. Step 6: Final answer
    x = 80,159.78

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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.