Home / 128,312.73-192,456.14-45,200.25

Finding the Fourth Proportional to 128,312.73, 192,456.14 and 45,200.25

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Solution

The fourth proportional to 128,312.73, 192,456.14 and 45,200.25 is: 67,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,312.73 : 192,456.14 = 45,200.25 : x
  2. Step 2: Convert to fraction form
    128,312.73/192,456.14 = 45,200.25/x
  3. Step 3: Cross multiply
    128,312.73x = 192,456.14 × 45,200.25
  4. Step 4: Simplify right side
    128,312.73x = 8,699,065,416.03
  5. Step 5: Solve for x
    x = 8,699,065,416.03/128,312.73
  6. Step 6: Final answer
    x = 67,795.81

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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.