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Finding the Fourth Proportional to 90,616.65, 127,125.75 and 90,616.65

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Solution

The fourth proportional to 90,616.65, 127,125.75 and 90,616.65 is: 127,125.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,616.65 : 127,125.75 = 90,616.65 : x
  2. Step 2: Convert to fraction form
    90,616.65/127,125.75 = 90,616.65/x
  3. Step 3: Cross multiply
    90,616.65x = 127,125.75 × 90,616.65
  4. Step 4: Simplify right side
    90,616.65x = 11,519,709,593.74
  5. Step 5: Solve for x
    x = 11,519,709,593.74/90,616.65
  6. Step 6: Final answer
    x = 127,125.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.