Home / 102,576.08-153,864.12-81,930.80

Finding the Fourth Proportional to 102,576.08, 153,864.12 and 81,930.80

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Solution

The fourth proportional to 102,576.08, 153,864.12 and 81,930.80 is: 122,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,576.08 : 153,864.12 = 81,930.80 : x
  2. Step 2: Convert to fraction form
    102,576.08/153,864.12 = 81,930.80/x
  3. Step 3: Cross multiply
    102,576.08x = 153,864.12 × 81,930.80
  4. Step 4: Simplify right side
    102,576.08x = 12,606,210,442.90
  5. Step 5: Solve for x
    x = 12,606,210,442.90/102,576.08
  6. Step 6: Final answer
    x = 122,896.20

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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.