Home / 128,933.84-177,883.08-84,247.76

Finding the Fourth Proportional to 128,933.84, 177,883.08 and 84,247.76

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Solution

The fourth proportional to 128,933.84, 177,883.08 and 84,247.76 is: 116,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,933.84 : 177,883.08 = 84,247.76 : x
  2. Step 2: Convert to fraction form
    128,933.84/177,883.08 = 84,247.76/x
  3. Step 3: Cross multiply
    128,933.84x = 177,883.08 × 84,247.76
  4. Step 4: Simplify right side
    128,933.84x = 14,986,251,031.90
  5. Step 5: Solve for x
    x = 14,986,251,031.90/128,933.84
  6. Step 6: Final answer
    x = 116,232.10

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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.