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Finding the Fourth Proportional to 117,007.20, 175,510.80 and 89,013.60

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Solution

The fourth proportional to 117,007.20, 175,510.80 and 89,013.60 is: 133,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,007.20 : 175,510.80 = 89,013.60 : x
  2. Step 2: Convert to fraction form
    117,007.20/175,510.80 = 89,013.60/x
  3. Step 3: Cross multiply
    117,007.20x = 175,510.80 × 89,013.60
  4. Step 4: Simplify right side
    117,007.20x = 15,622,848,146.88
  5. Step 5: Solve for x
    x = 15,622,848,146.88/117,007.20
  6. Step 6: Final answer
    x = 133,520.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.