Home / 159,421.06-219,998.40-87,807.76

Finding the Fourth Proportional to 159,421.06, 219,998.40 and 87,807.76

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Solution

The fourth proportional to 159,421.06, 219,998.40 and 87,807.76 is: 121,173.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,421.06 : 219,998.40 = 87,807.76 : x
  2. Step 2: Convert to fraction form
    159,421.06/219,998.40 = 87,807.76/x
  3. Step 3: Cross multiply
    159,421.06x = 219,998.40 × 87,807.76
  4. Step 4: Simplify right side
    159,421.06x = 19,317,566,707.58
  5. Step 5: Solve for x
    x = 19,317,566,707.58/159,421.06
  6. Step 6: Final answer
    x = 121,173.24

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1.5x scale

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.