Home / 159,386.40-219,949.83-87,764.58

Finding the Fourth Proportional to 159,386.40, 219,949.83 and 87,764.58

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Solution

The fourth proportional to 159,386.40, 219,949.83 and 87,764.58 is: 121,113.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,386.40 : 219,949.83 = 87,764.58 : x
  2. Step 2: Convert to fraction form
    159,386.40/219,949.83 = 87,764.58/x
  3. Step 3: Cross multiply
    159,386.40x = 219,949.83 × 87,764.58
  4. Step 4: Simplify right side
    159,386.40x = 19,303,804,451.02
  5. Step 5: Solve for x
    x = 19,303,804,451.02/159,386.40
  6. Step 6: Final answer
    x = 121,113.25

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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.