Home / 153,822.51-212,268.20-85,835.79

Finding the Fourth Proportional to 153,822.51, 212,268.20 and 85,835.79

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Solution

The fourth proportional to 153,822.51, 212,268.20 and 85,835.79 is: 118,449.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,822.51 : 212,268.20 = 85,835.79 : x
  2. Step 2: Convert to fraction form
    153,822.51/212,268.20 = 85,835.79/x
  3. Step 3: Cross multiply
    153,822.51x = 212,268.20 × 85,835.79
  4. Step 4: Simplify right side
    153,822.51x = 18,220,208,209.70
  5. Step 5: Solve for x
    x = 18,220,208,209.70/153,822.51
  6. Step 6: Final answer
    x = 118,449.56

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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.