Home / 159,154.20-219,638.16-87,539.76

Finding the Fourth Proportional to 159,154.20, 219,638.16 and 87,539.76

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Solution

The fourth proportional to 159,154.20, 219,638.16 and 87,539.76 is: 120,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,154.20 : 219,638.16 = 87,539.76 : x
  2. Step 2: Convert to fraction form
    159,154.20/219,638.16 = 87,539.76/x
  3. Step 3: Cross multiply
    159,154.20x = 219,638.16 × 87,539.76
  4. Step 4: Simplify right side
    159,154.20x = 19,227,071,813.24
  5. Step 5: Solve for x
    x = 19,227,071,813.24/159,154.20
  6. Step 6: Final answer
    x = 120,807.82

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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.