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Finding the Fourth Proportional to 153,773.64, 212,019.12 and 126,454.28

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Solution

The fourth proportional to 153,773.64, 212,019.12 and 126,454.28 is: 174,351.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,773.64 : 212,019.12 = 126,454.28 : x
  2. Step 2: Convert to fraction form
    153,773.64/212,019.12 = 126,454.28/x
  3. Step 3: Cross multiply
    153,773.64x = 212,019.12 × 126,454.28
  4. Step 4: Simplify right side
    153,773.64x = 26,810,725,165.83
  5. Step 5: Solve for x
    x = 26,810,725,165.83/153,773.64
  6. Step 6: Final answer
    x = 174,351.89

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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.