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Finding the Fourth Proportional to 143,959.72, 198,655.86 and 83,525.68

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Solution

The fourth proportional to 143,959.72, 198,655.86 and 83,525.68 is: 115,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,959.72 : 198,655.86 = 83,525.68 : x
  2. Step 2: Convert to fraction form
    143,959.72/198,655.86 = 83,525.68/x
  3. Step 3: Cross multiply
    143,959.72x = 198,655.86 × 83,525.68
  4. Step 4: Simplify right side
    143,959.72x = 16,592,865,792.48
  5. Step 5: Solve for x
    x = 16,592,865,792.48/143,959.72
  6. Step 6: Final answer
    x = 115,260.48

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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.