Home / 143,328.72-197,795.84-78,800.75

Finding the Fourth Proportional to 143,328.72, 197,795.84 and 78,800.75

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Solution

The fourth proportional to 143,328.72, 197,795.84 and 78,800.75 is: 108,746.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,328.72 : 197,795.84 = 78,800.75 : x
  2. Step 2: Convert to fraction form
    143,328.72/197,795.84 = 78,800.75/x
  3. Step 3: Cross multiply
    143,328.72x = 197,795.84 × 78,800.75
  4. Step 4: Simplify right side
    143,328.72x = 15,586,459,155.90
  5. Step 5: Solve for x
    x = 15,586,459,155.90/143,328.72
  6. Step 6: Final answer
    x = 108,746.24

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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.