Home / 129,765.30-179,088.63-78,766.27

Finding the Fourth Proportional to 129,765.30, 179,088.63 and 78,766.27

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Solution

The fourth proportional to 129,765.30, 179,088.63 and 78,766.27 is: 108,705.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765.30 : 179,088.63 = 78,766.27 : x
  2. Step 2: Convert to fraction form
    129,765.30/179,088.63 = 78,766.27/x
  3. Step 3: Cross multiply
    129,765.30x = 179,088.63 × 78,766.27
  4. Step 4: Simplify right side
    129,765.30x = 14,106,143,384.51
  5. Step 5: Solve for x
    x = 14,106,143,384.51/129,765.30
  6. Step 6: Final answer
    x = 108,705.05

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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.