Home / 155,410.31-214,465.91-87,427.32

Finding the Fourth Proportional to 155,410.31, 214,465.91 and 87,427.32

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Solution

The fourth proportional to 155,410.31, 214,465.91 and 87,427.32 is: 120,649.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,410.31 : 214,465.91 = 87,427.32 : x
  2. Step 2: Convert to fraction form
    155,410.31/214,465.91 = 87,427.32/x
  3. Step 3: Cross multiply
    155,410.31x = 214,465.91 × 87,427.32
  4. Step 4: Simplify right side
    155,410.31x = 18,750,179,305.52
  5. Step 5: Solve for x
    x = 18,750,179,305.52/155,410.31
  6. Step 6: Final answer
    x = 120,649.52

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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.