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Finding the Fourth Proportional to 128,292.48, 177,035.99 and 70,928.37

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Solution

The fourth proportional to 128,292.48, 177,035.99 and 70,928.37 is: 97,876.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,292.48 : 177,035.99 = 70,928.37 : x
  2. Step 2: Convert to fraction form
    128,292.48/177,035.99 = 70,928.37/x
  3. Step 3: Cross multiply
    128,292.48x = 177,035.99 × 70,928.37
  4. Step 4: Simplify right side
    128,292.48x = 12,556,873,847.39
  5. Step 5: Solve for x
    x = 12,556,873,847.39/128,292.48
  6. Step 6: Final answer
    x = 97,876.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.