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Finding the Fourth Proportional to 151,104.63, 208,531.44 and 87,430.11

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Solution

The fourth proportional to 151,104.63, 208,531.44 and 87,430.11 is: 120,657.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,104.63 : 208,531.44 = 87,430.11 : x
  2. Step 2: Convert to fraction form
    151,104.63/208,531.44 = 87,430.11/x
  3. Step 3: Cross multiply
    151,104.63x = 208,531.44 × 87,430.11
  4. Step 4: Simplify right side
    151,104.63x = 18,231,926,737.66
  5. Step 5: Solve for x
    x = 18,231,926,737.66/151,104.63
  6. Step 6: Final answer
    x = 120,657.63

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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.