Home / 128,311.10-177,053.85-70,942.67

Finding the Fourth Proportional to 128,311.10, 177,053.85 and 70,942.67

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Solution

The fourth proportional to 128,311.10, 177,053.85 and 70,942.67 is: 97,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,311.10 : 177,053.85 = 70,942.67 : x
  2. Step 2: Convert to fraction form
    128,311.10/177,053.85 = 70,942.67/x
  3. Step 3: Cross multiply
    128,311.10x = 177,053.85 × 70,942.67
  4. Step 4: Simplify right side
    128,311.10x = 12,560,672,852.78
  5. Step 5: Solve for x
    x = 12,560,672,852.78/128,311.10
  6. Step 6: Final answer
    x = 97,892.33

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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.