Home / 138,857.10-208,285.65-50,124.30

Finding the Fourth Proportional to 138,857.10, 208,285.65 and 50,124.30

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Solution

The fourth proportional to 138,857.10, 208,285.65 and 50,124.30 is: 75,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,857.10 : 208,285.65 = 50,124.30 : x
  2. Step 2: Convert to fraction form
    138,857.10/208,285.65 = 50,124.30/x
  3. Step 3: Cross multiply
    138,857.10x = 208,285.65 × 50,124.30
  4. Step 4: Simplify right side
    138,857.10x = 10,440,172,406.30
  5. Step 5: Solve for x
    x = 10,440,172,406.30/138,857.10
  6. Step 6: Final answer
    x = 75,186.45

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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.