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Finding the Fourth Proportional to 104,065.91, 143,611.13 and 56,319.30

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Solution

The fourth proportional to 104,065.91, 143,611.13 and 56,319.30 is: 77,720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,065.91 : 143,611.13 = 56,319.30 : x
  2. Step 2: Convert to fraction form
    104,065.91/143,611.13 = 56,319.30/x
  3. Step 3: Cross multiply
    104,065.91x = 143,611.13 × 56,319.30
  4. Step 4: Simplify right side
    104,065.91x = 8,088,078,313.81
  5. Step 5: Solve for x
    x = 8,088,078,313.81/104,065.91
  6. Step 6: Final answer
    x = 77,720.73

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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.