Home / 159,086.15-219,533.28-87,465.62

Finding the Fourth Proportional to 159,086.15, 219,533.28 and 87,465.62

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Solution

The fourth proportional to 159,086.15, 219,533.28 and 87,465.62 is: 120,699.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,086.15 : 219,533.28 = 87,465.62 : x
  2. Step 2: Convert to fraction form
    159,086.15/219,533.28 = 87,465.62/x
  3. Step 3: Cross multiply
    159,086.15x = 219,533.28 × 87,465.62
  4. Step 4: Simplify right side
    159,086.15x = 19,201,614,008.51
  5. Step 5: Solve for x
    x = 19,201,614,008.51/159,086.15
  6. Step 6: Final answer
    x = 120,699.47

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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.