Home / 153,742.23-212,164.61-85,757.49

Finding the Fourth Proportional to 153,742.23, 212,164.61 and 85,757.49

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Solution

The fourth proportional to 153,742.23, 212,164.61 and 85,757.49 is: 118,345.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,742.23 : 212,164.61 = 85,757.49 : x
  2. Step 2: Convert to fraction form
    153,742.23/212,164.61 = 85,757.49/x
  3. Step 3: Cross multiply
    153,742.23x = 212,164.61 × 85,757.49
  4. Step 4: Simplify right side
    153,742.23x = 18,194,703,991.64
  5. Step 5: Solve for x
    x = 18,194,703,991.64/153,742.23
  6. Step 6: Final answer
    x = 118,345.52

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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.