Home / 145,381.08-200,624.79-81,719.13

Finding the Fourth Proportional to 145,381.08, 200,624.79 and 81,719.13

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Solution

The fourth proportional to 145,381.08, 200,624.79 and 81,719.13 is: 112,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,381.08 : 200,624.79 = 81,719.13 : x
  2. Step 2: Convert to fraction form
    145,381.08/200,624.79 = 81,719.13/x
  3. Step 3: Cross multiply
    145,381.08x = 200,624.79 × 81,719.13
  4. Step 4: Simplify right side
    145,381.08x = 16,394,883,295.23
  5. Step 5: Solve for x
    x = 16,394,883,295.23/145,381.08
  6. Step 6: Final answer
    x = 112,771.78

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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.