Home / 153,855.25-212,301.20-85,876.00

Finding the Fourth Proportional to 153,855.25, 212,301.20 and 85,876.00

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Solution

The fourth proportional to 153,855.25, 212,301.20 and 85,876.00 is: 118,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,855.25 : 212,301.20 = 85,876.00 : x
  2. Step 2: Convert to fraction form
    153,855.25/212,301.20 = 85,876.00/x
  3. Step 3: Cross multiply
    153,855.25x = 212,301.20 × 85,876.00
  4. Step 4: Simplify right side
    153,855.25x = 18,231,577,535.14
  5. Step 5: Solve for x
    x = 18,231,577,535.14/153,855.25
  6. Step 6: Final answer
    x = 118,498.25

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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.