Home / 159,409.02-219,985.90-87,789.32

Finding the Fourth Proportional to 159,409.02, 219,985.90 and 87,789.32

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Solution

The fourth proportional to 159,409.02, 219,985.90 and 87,789.32 is: 121,150.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,409.02 : 219,985.90 = 87,789.32 : x
  2. Step 2: Convert to fraction form
    159,409.02/219,985.90 = 87,789.32/x
  3. Step 3: Cross multiply
    159,409.02x = 219,985.90 × 87,789.32
  4. Step 4: Simplify right side
    159,409.02x = 19,312,412,570.59
  5. Step 5: Solve for x
    x = 19,312,412,570.59/159,409.02
  6. Step 6: Final answer
    x = 121,150.06

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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.