Home / 145,539.72-200,778.43-105,189.57

Finding the Fourth Proportional to 145,539.72, 200,778.43 and 105,189.57

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Solution

The fourth proportional to 145,539.72, 200,778.43 and 105,189.57 is: 145,113.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,539.72 : 200,778.43 = 105,189.57 : x
  2. Step 2: Convert to fraction form
    145,539.72/200,778.43 = 105,189.57/x
  3. Step 3: Cross multiply
    145,539.72x = 200,778.43 × 105,189.57
  4. Step 4: Simplify right side
    145,539.72x = 21,119,796,716.98
  5. Step 5: Solve for x
    x = 21,119,796,716.98/145,539.72
  6. Step 6: Final answer
    x = 145,113.63

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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.