Home / 143,354.03-197,833.63-78,828.16

Finding the Fourth Proportional to 143,354.03, 197,833.63 and 78,828.16

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Solution

The fourth proportional to 143,354.03, 197,833.63 and 78,828.16 is: 108,785.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,354.03 : 197,833.63 = 78,828.16 : x
  2. Step 2: Convert to fraction form
    143,354.03/197,833.63 = 78,828.16/x
  3. Step 3: Cross multiply
    143,354.03x = 197,833.63 × 78,828.16
  4. Step 4: Simplify right side
    143,354.03x = 15,594,861,039.02
  5. Step 5: Solve for x
    x = 15,594,861,039.02/143,354.03
  6. Step 6: Final answer
    x = 108,785.65

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1.5x scale

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.