Home / 159,031.25-219,457.55-87,410.81

Finding the Fourth Proportional to 159,031.25, 219,457.55 and 87,410.81

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Solution

The fourth proportional to 159,031.25, 219,457.55 and 87,410.81 is: 120,623.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,031.25 : 219,457.55 = 87,410.81 : x
  2. Step 2: Convert to fraction form
    159,031.25/219,457.55 = 87,410.81/x
  3. Step 3: Cross multiply
    159,031.25x = 219,457.55 × 87,410.81
  4. Step 4: Simplify right side
    159,031.25x = 19,182,962,973.29
  5. Step 5: Solve for x
    x = 19,182,962,973.29/159,031.25
  6. Step 6: Final answer
    x = 120,623.86

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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.