Home / 143,038.83-197,391.51-81,784.41

Finding the Fourth Proportional to 143,038.83, 197,391.51 and 81,784.41

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Solution

The fourth proportional to 143,038.83, 197,391.51 and 81,784.41 is: 112,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,038.83 : 197,391.51 = 81,784.41 : x
  2. Step 2: Convert to fraction form
    143,038.83/197,391.51 = 81,784.41/x
  3. Step 3: Cross multiply
    143,038.83x = 197,391.51 × 81,784.41
  4. Step 4: Simplify right side
    143,038.83x = 16,143,548,184.36
  5. Step 5: Solve for x
    x = 16,143,548,184.36/143,038.83
  6. Step 6: Final answer
    x = 112,861.30

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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.