Home / 90,263.75-135,526.86-66,644.15

Finding the Fourth Proportional to 90,263.75, 135,526.86 and 66,644.15

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Solution

The fourth proportional to 90,263.75, 135,526.86 and 66,644.15 is: 100,063.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,263.75 : 135,526.86 = 66,644.15 : x
  2. Step 2: Convert to fraction form
    90,263.75/135,526.86 = 66,644.15/x
  3. Step 3: Cross multiply
    90,263.75x = 135,526.86 × 66,644.15
  4. Step 4: Simplify right side
    90,263.75x = 9,032,071,709.23
  5. Step 5: Solve for x
    x = 9,032,071,709.23/90,263.75
  6. Step 6: Final answer
    x = 100,063.12

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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.