Home / 145,406.27-200,658.70-81,744.05

Finding the Fourth Proportional to 145,406.27, 200,658.70 and 81,744.05

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Solution

The fourth proportional to 145,406.27, 200,658.70 and 81,744.05 is: 112,805.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,406.27 : 200,658.70 = 81,744.05 : x
  2. Step 2: Convert to fraction form
    145,406.27/200,658.70 = 81,744.05/x
  3. Step 3: Cross multiply
    145,406.27x = 200,658.70 × 81,744.05
  4. Step 4: Simplify right side
    145,406.27x = 16,402,655,409.56
  5. Step 5: Solve for x
    x = 16,402,655,409.56/145,406.27
  6. Step 6: Final answer
    x = 112,805.69

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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.