Home / 129,437.19-178,554.83-89,080.90

Finding the Fourth Proportional to 129,437.19, 178,554.83 and 89,080.90

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Solution

The fourth proportional to 129,437.19, 178,554.83 and 89,080.90 is: 122,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,437.19 : 178,554.83 = 89,080.90 : x
  2. Step 2: Convert to fraction form
    129,437.19/178,554.83 = 89,080.90/x
  3. Step 3: Cross multiply
    129,437.19x = 178,554.83 × 89,080.90
  4. Step 4: Simplify right side
    129,437.19x = 15,905,824,063.96
  5. Step 5: Solve for x
    x = 15,905,824,063.96/129,437.19
  6. Step 6: Final answer
    x = 122,884.50

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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.