Home / 151,071.85-208,462.80-87,397.75

Finding the Fourth Proportional to 151,071.85, 208,462.80 and 87,397.75

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Solution

The fourth proportional to 151,071.85, 208,462.80 and 87,397.75 is: 120,599.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,071.85 : 208,462.80 = 87,397.75 : x
  2. Step 2: Convert to fraction form
    151,071.85/208,462.80 = 87,397.75/x
  3. Step 3: Cross multiply
    151,071.85x = 208,462.80 × 87,397.75
  4. Step 4: Simplify right side
    151,071.85x = 18,219,179,678.70
  5. Step 5: Solve for x
    x = 18,219,179,678.70/151,071.85
  6. Step 6: Final answer
    x = 120,599.43

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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.