Home / 151,128.66-208,564.56-87,454.14

Finding the Fourth Proportional to 151,128.66, 208,564.56 and 87,454.14

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Solution

The fourth proportional to 151,128.66, 208,564.56 and 87,454.14 is: 120,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,128.66 : 208,564.56 = 87,454.14 : x
  2. Step 2: Convert to fraction form
    151,128.66/208,564.56 = 87,454.14/x
  3. Step 3: Cross multiply
    151,128.66x = 208,564.56 × 87,454.14
  4. Step 4: Simplify right side
    151,128.66x = 18,239,834,229.28
  5. Step 5: Solve for x
    x = 18,239,834,229.28/151,128.66
  6. Step 6: Final answer
    x = 120,690.77

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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.