Home / 159,403.02-219,977.60-87,783.32

Finding the Fourth Proportional to 159,403.02, 219,977.60 and 87,783.32

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Solution

The fourth proportional to 159,403.02, 219,977.60 and 87,783.32 is: 121,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,403.02 : 219,977.60 = 87,783.32 : x
  2. Step 2: Convert to fraction form
    159,403.02/219,977.60 = 87,783.32/x
  3. Step 3: Cross multiply
    159,403.02x = 219,977.60 × 87,783.32
  4. Step 4: Simplify right side
    159,403.02x = 19,310,364,053.63
  5. Step 5: Solve for x
    x = 19,310,364,053.63/159,403.02
  6. Step 6: Final answer
    x = 121,141.77

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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.