Home / 158,669.15-218,977.59-87,063.11

Finding the Fourth Proportional to 158,669.15, 218,977.59 and 87,063.11

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Solution

The fourth proportional to 158,669.15, 218,977.59 and 87,063.11 is: 120,154.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,669.15 : 218,977.59 = 87,063.11 : x
  2. Step 2: Convert to fraction form
    158,669.15/218,977.59 = 87,063.11/x
  3. Step 3: Cross multiply
    158,669.15x = 218,977.59 × 87,063.11
  4. Step 4: Simplify right side
    158,669.15x = 19,064,870,005.70
  5. Step 5: Solve for x
    x = 19,064,870,005.70/158,669.15
  6. Step 6: Final answer
    x = 120,154.86

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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.