Home / 189,623.86-261,675-103,581.46

Finding the Fourth Proportional to 189,623.86, 261,675 and 103,581.46

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Solution

The fourth proportional to 189,623.86, 261,675 and 103,581.46 is: 142,939.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,623.86 : 261,675 = 103,581.46 : x
  2. Step 2: Convert to fraction form
    189,623.86/261,675 = 103,581.46/x
  3. Step 3: Cross multiply
    189,623.86x = 261,675 × 103,581.46
  4. Step 4: Simplify right side
    189,623.86x = 27,104,678,545.50
  5. Step 5: Solve for x
    x = 27,104,678,545.50/189,623.86
  6. Step 6: Final answer
    x = 142,939.18

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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.