Home / 153,098.12-211,275.11-85,121.37

Finding the Fourth Proportional to 153,098.12, 211,275.11 and 85,121.37

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Solution

The fourth proportional to 153,098.12, 211,275.11 and 85,121.37 is: 117,467.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,098.12 : 211,275.11 = 85,121.37 : x
  2. Step 2: Convert to fraction form
    153,098.12/211,275.11 = 85,121.37/x
  3. Step 3: Cross multiply
    153,098.12x = 211,275.11 × 85,121.37
  4. Step 4: Simplify right side
    153,098.12x = 17,984,025,753.73
  5. Step 5: Solve for x
    x = 17,984,025,753.73/153,098.12
  6. Step 6: Final answer
    x = 117,467.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.