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Finding the Fourth Proportional to 158,259.52, 218,415.69 and 90,293.26

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Solution

The fourth proportional to 158,259.52, 218,415.69 and 90,293.26 is: 124,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,259.52 : 218,415.69 = 90,293.26 : x
  2. Step 2: Convert to fraction form
    158,259.52/218,415.69 = 90,293.26/x
  3. Step 3: Cross multiply
    158,259.52x = 218,415.69 × 90,293.26
  4. Step 4: Simplify right side
    158,259.52x = 19,721,463,934.45
  5. Step 5: Solve for x
    x = 19,721,463,934.45/158,259.52
  6. Step 6: Final answer
    x = 124,614.71

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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.