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Finding the Fourth Proportional to 101,308.79, 151,827.35 and 78,846.59

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Solution

The fourth proportional to 101,308.79, 151,827.35 and 78,846.59 is: 118,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,308.79 : 151,827.35 = 78,846.59 : x
  2. Step 2: Convert to fraction form
    101,308.79/151,827.35 = 78,846.59/x
  3. Step 3: Cross multiply
    101,308.79x = 151,827.35 × 78,846.59
  4. Step 4: Simplify right side
    101,308.79x = 11,971,068,816.24
  5. Step 5: Solve for x
    x = 11,971,068,816.24/101,308.79
  6. Step 6: Final answer
    x = 118,164.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.