Home / 145,057.42-200,178.70-81,395.07

Finding the Fourth Proportional to 145,057.42, 200,178.70 and 81,395.07

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Solution

The fourth proportional to 145,057.42, 200,178.70 and 81,395.07 is: 112,324.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,057.42 : 200,178.70 = 81,395.07 : x
  2. Step 2: Convert to fraction form
    145,057.42/200,178.70 = 81,395.07/x
  3. Step 3: Cross multiply
    145,057.42x = 200,178.70 × 81,395.07
  4. Step 4: Simplify right side
    145,057.42x = 16,293,559,299.01
  5. Step 5: Solve for x
    x = 16,293,559,299.01/145,057.42
  6. Step 6: Final answer
    x = 112,324.89

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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.