Home / 159,111.36-219,566.16-87,494.40

Finding the Fourth Proportional to 159,111.36, 219,566.16 and 87,494.40

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Solution

The fourth proportional to 159,111.36, 219,566.16 and 87,494.40 is: 120,738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,111.36 : 219,566.16 = 87,494.40 : x
  2. Step 2: Convert to fraction form
    159,111.36/219,566.16 = 87,494.40/x
  3. Step 3: Cross multiply
    159,111.36x = 219,566.16 × 87,494.40
  4. Step 4: Simplify right side
    159,111.36x = 19,210,809,429.50
  5. Step 5: Solve for x
    x = 19,210,809,429.50/159,111.36
  6. Step 6: Final answer
    x = 120,738.14

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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.