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Finding the Fourth Proportional to 143,937.77, 198,643.86 and 83,508.44

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Solution

The fourth proportional to 143,937.77, 198,643.86 and 83,508.44 is: 115,247.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,937.77 : 198,643.86 = 83,508.44 : x
  2. Step 2: Convert to fraction form
    143,937.77/198,643.86 = 83,508.44/x
  3. Step 3: Cross multiply
    143,937.77x = 198,643.86 × 83,508.44
  4. Step 4: Simplify right side
    143,937.77x = 16,588,439,360.79
  5. Step 5: Solve for x
    x = 16,588,439,360.79/143,937.77
  6. Step 6: Final answer
    x = 115,247.30

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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.