Home / 151,051.44-208,442.97-87,390.30

Finding the Fourth Proportional to 151,051.44, 208,442.97 and 87,390.30

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Solution

The fourth proportional to 151,051.44, 208,442.97 and 87,390.30 is: 120,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,051.44 : 208,442.97 = 87,390.30 : x
  2. Step 2: Convert to fraction form
    151,051.44/208,442.97 = 87,390.30/x
  3. Step 3: Cross multiply
    151,051.44x = 208,442.97 × 87,390.30
  4. Step 4: Simplify right side
    151,051.44x = 18,215,893,681.19
  5. Step 5: Solve for x
    x = 18,215,893,681.19/151,051.44
  6. Step 6: Final answer
    x = 120,593.98

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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.