Home / 128,310.10-177,052.48-70,941.67

Finding the Fourth Proportional to 128,310.10, 177,052.48 and 70,941.67

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Solution

The fourth proportional to 128,310.10, 177,052.48 and 70,941.67 is: 97,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,310.10 : 177,052.48 = 70,941.67 : x
  2. Step 2: Convert to fraction form
    128,310.10/177,052.48 = 70,941.67/x
  3. Step 3: Cross multiply
    128,310.10x = 177,052.48 × 70,941.67
  4. Step 4: Simplify right side
    128,310.10x = 12,560,397,368.87
  5. Step 5: Solve for x
    x = 12,560,397,368.87/128,310.10
  6. Step 6: Final answer
    x = 97,890.95

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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.