Home / 143,117.54-197,505.77-78,593.15

Finding the Fourth Proportional to 143,117.54, 197,505.77 and 78,593.15

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Solution

The fourth proportional to 143,117.54, 197,505.77 and 78,593.15 is: 108,460.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,117.54 : 197,505.77 = 78,593.15 : x
  2. Step 2: Convert to fraction form
    143,117.54/197,505.77 = 78,593.15/x
  3. Step 3: Cross multiply
    143,117.54x = 197,505.77 × 78,593.15
  4. Step 4: Simplify right side
    143,117.54x = 15,522,599,816.43
  5. Step 5: Solve for x
    x = 15,522,599,816.43/143,117.54
  6. Step 6: Final answer
    x = 108,460.50

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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.