Home / 90,815.36-136,045.92-51,252.80

Finding the Fourth Proportional to 90,815.36, 136,045.92 and 51,252.80

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Solution

The fourth proportional to 90,815.36, 136,045.92 and 51,252.80 is: 76,779.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.36 : 136,045.92 = 51,252.80 : x
  2. Step 2: Convert to fraction form
    90,815.36/136,045.92 = 51,252.80/x
  3. Step 3: Cross multiply
    90,815.36x = 136,045.92 × 51,252.80
  4. Step 4: Simplify right side
    90,815.36x = 6,972,734,328.58
  5. Step 5: Solve for x
    x = 6,972,734,328.58/90,815.36
  6. Step 6: Final answer
    x = 76,779.24

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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.