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Finding the Fourth Proportional to 90,950.73, 125,478.06 and 90,810.55

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Solution

The fourth proportional to 90,950.73, 125,478.06 and 90,810.55 is: 125,284.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,950.73 : 125,478.06 = 90,810.55 : x
  2. Step 2: Convert to fraction form
    90,950.73/125,478.06 = 90,810.55/x
  3. Step 3: Cross multiply
    90,950.73x = 125,478.06 × 90,810.55
  4. Step 4: Simplify right side
    90,950.73x = 11,394,731,968.65
  5. Step 5: Solve for x
    x = 11,394,731,968.65/90,950.73
  6. Step 6: Final answer
    x = 125,284.66

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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.