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Finding the Fourth Proportional to 151,408.51, 208,897.48 and 87,734.01

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Solution

The fourth proportional to 151,408.51, 208,897.48 and 87,734.01 is: 121,046.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,408.51 : 208,897.48 = 87,734.01 : x
  2. Step 2: Convert to fraction form
    151,408.51/208,897.48 = 87,734.01/x
  3. Step 3: Cross multiply
    151,408.51x = 208,897.48 × 87,734.01
  4. Step 4: Simplify right side
    151,408.51x = 18,327,413,599.29
  5. Step 5: Solve for x
    x = 18,327,413,599.29/151,408.51
  6. Step 6: Final answer
    x = 121,046.13

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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.