Home / 145,687.56-201,048.23-81,157.55

Finding the Fourth Proportional to 145,687.56, 201,048.23 and 81,157.55

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Solution

The fourth proportional to 145,687.56, 201,048.23 and 81,157.55 is: 111,997.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,687.56 : 201,048.23 = 81,157.55 : x
  2. Step 2: Convert to fraction form
    145,687.56/201,048.23 = 81,157.55/x
  3. Step 3: Cross multiply
    145,687.56x = 201,048.23 × 81,157.55
  4. Step 4: Simplify right side
    145,687.56x = 16,316,580,519.78
  5. Step 5: Solve for x
    x = 16,316,580,519.78/145,687.56
  6. Step 6: Final answer
    x = 111,997.07

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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.