Home / 90,954.72-136,601.46-74,350.08

Finding the Fourth Proportional to 90,954.72, 136,601.46 and 74,350.08

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Solution

The fourth proportional to 90,954.72, 136,601.46 and 74,350.08 is: 111,663.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,954.72 : 136,601.46 = 74,350.08 : x
  2. Step 2: Convert to fraction form
    90,954.72/136,601.46 = 74,350.08/x
  3. Step 3: Cross multiply
    90,954.72x = 136,601.46 × 74,350.08
  4. Step 4: Simplify right side
    90,954.72x = 10,156,329,479.12
  5. Step 5: Solve for x
    x = 10,156,329,479.12/90,954.72
  6. Step 6: Final answer
    x = 111,663.58

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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.