Home / 145,538.72-200,777.05-105,188.57

Finding the Fourth Proportional to 145,538.72, 200,777.05 and 105,188.57

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Solution

The fourth proportional to 145,538.72, 200,777.05 and 105,188.57 is: 145,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,538.72 : 200,777.05 = 105,188.57 : x
  2. Step 2: Convert to fraction form
    145,538.72/200,777.05 = 105,188.57/x
  3. Step 3: Cross multiply
    145,538.72x = 200,777.05 × 105,188.57
  4. Step 4: Simplify right side
    145,538.72x = 21,119,449,511.46
  5. Step 5: Solve for x
    x = 21,119,449,511.46/145,538.72
  6. Step 6: Final answer
    x = 145,112.24

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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.