Home / 128,063.84-176,666.28-80,299.76

Finding the Fourth Proportional to 128,063.84, 176,666.28 and 80,299.76

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Solution

The fourth proportional to 128,063.84, 176,666.28 and 80,299.76 is: 110,774.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,063.84 : 176,666.28 = 80,299.76 : x
  2. Step 2: Convert to fraction form
    128,063.84/176,666.28 = 80,299.76/x
  3. Step 3: Cross multiply
    128,063.84x = 176,666.28 × 80,299.76
  4. Step 4: Simplify right side
    128,063.84x = 14,186,259,884.09
  5. Step 5: Solve for x
    x = 14,186,259,884.09/128,063.84
  6. Step 6: Final answer
    x = 110,774.91

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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.