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Finding the Fourth Proportional to 103,783.71, 143,166.96 and 65,529.43

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Solution

The fourth proportional to 103,783.71, 143,166.96 and 65,529.43 is: 90,396.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,783.71 : 143,166.96 = 65,529.43 : x
  2. Step 2: Convert to fraction form
    103,783.71/143,166.96 = 65,529.43/x
  3. Step 3: Cross multiply
    103,783.71x = 143,166.96 × 65,529.43
  4. Step 4: Simplify right side
    103,783.71x = 9,381,649,051.92
  5. Step 5: Solve for x
    x = 9,381,649,051.92/103,783.71
  6. Step 6: Final answer
    x = 90,396.17

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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.