Home / 145,108.19-200,238.33-81,433.69

Finding the Fourth Proportional to 145,108.19, 200,238.33 and 81,433.69

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Solution

The fourth proportional to 145,108.19, 200,238.33 and 81,433.69 is: 112,372.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,108.19 : 200,238.33 = 81,433.69 : x
  2. Step 2: Convert to fraction form
    145,108.19/200,238.33 = 81,433.69/x
  3. Step 3: Cross multiply
    145,108.19x = 200,238.33 × 81,433.69
  4. Step 4: Simplify right side
    145,108.19x = 16,306,145,438.05
  5. Step 5: Solve for x
    x = 16,306,145,438.05/145,108.19
  6. Step 6: Final answer
    x = 112,372.33

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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.