Home / 138,823.80-208,214.10-38,974.20

Finding the Fourth Proportional to 138,823.80, 208,214.10 and 38,974.20

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Solution

The fourth proportional to 138,823.80, 208,214.10 and 38,974.20 is: 58,455.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,823.80 : 208,214.10 = 38,974.20 : x
  2. Step 2: Convert to fraction form
    138,823.80/208,214.10 = 38,974.20/x
  3. Step 3: Cross multiply
    138,823.80x = 208,214.10 × 38,974.20
  4. Step 4: Simplify right side
    138,823.80x = 8,114,977,976.22
  5. Step 5: Solve for x
    x = 8,114,977,976.22/138,823.80
  6. Step 6: Final answer
    x = 58,455.24

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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.