Home / 90,964.62-136,533.60-65,689.38

Finding the Fourth Proportional to 90,964.62, 136,533.60 and 65,689.38

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Solution

The fourth proportional to 90,964.62, 136,533.60 and 65,689.38 is: 98,596.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,964.62 : 136,533.60 = 65,689.38 : x
  2. Step 2: Convert to fraction form
    90,964.62/136,533.60 = 65,689.38/x
  3. Step 3: Cross multiply
    90,964.62x = 136,533.60 × 65,689.38
  4. Step 4: Simplify right side
    90,964.62x = 8,968,807,533.17
  5. Step 5: Solve for x
    x = 8,968,807,533.17/90,964.62
  6. Step 6: Final answer
    x = 98,596.66

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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.