Home / 103,947.96-143,396.64-65,178.93

Finding the Fourth Proportional to 103,947.96, 143,396.64 and 65,178.93

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Solution

The fourth proportional to 103,947.96, 143,396.64 and 65,178.93 is: 89,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,947.96 : 143,396.64 = 65,178.93 : x
  2. Step 2: Convert to fraction form
    103,947.96/143,396.64 = 65,178.93/x
  3. Step 3: Cross multiply
    103,947.96x = 143,396.64 × 65,178.93
  4. Step 4: Simplify right side
    103,947.96x = 9,346,439,560.80
  5. Step 5: Solve for x
    x = 9,346,439,560.80/103,947.96
  6. Step 6: Final answer
    x = 89,914.60

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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.