Home / 129,283.29-178,499.30-99,015.21

Finding the Fourth Proportional to 129,283.29, 178,499.30 and 99,015.21

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Solution

The fourth proportional to 129,283.29, 178,499.30 and 99,015.21 is: 136,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,283.29 : 178,499.30 = 99,015.21 : x
  2. Step 2: Convert to fraction form
    129,283.29/178,499.30 = 99,015.21/x
  3. Step 3: Cross multiply
    129,283.29x = 178,499.30 × 99,015.21
  4. Step 4: Simplify right side
    129,283.29x = 17,674,145,179.28
  5. Step 5: Solve for x
    x = 17,674,145,179.28/129,283.29
  6. Step 6: Final answer
    x = 136,708.66

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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.