Home / 90,851.36-136,299.81-53,442.72

Finding the Fourth Proportional to 90,851.36, 136,299.81 and 53,442.72

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Solution

The fourth proportional to 90,851.36, 136,299.81 and 53,442.72 is: 80,177.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,851.36 : 136,299.81 = 53,442.72 : x
  2. Step 2: Convert to fraction form
    90,851.36/136,299.81 = 53,442.72/x
  3. Step 3: Cross multiply
    90,851.36x = 136,299.81 × 53,442.72
  4. Step 4: Simplify right side
    90,851.36x = 7,284,232,782.29
  5. Step 5: Solve for x
    x = 7,284,232,782.29/90,851.36
  6. Step 6: Final answer
    x = 80,177.48

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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.