Home / 145,064.91-200,191.08-81,401.34

Finding the Fourth Proportional to 145,064.91, 200,191.08 and 81,401.34

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Solution

The fourth proportional to 145,064.91, 200,191.08 and 81,401.34 is: 112,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,064.91 : 200,191.08 = 81,401.34 : x
  2. Step 2: Convert to fraction form
    145,064.91/200,191.08 = 81,401.34/x
  3. Step 3: Cross multiply
    145,064.91x = 200,191.08 × 81,401.34
  4. Step 4: Simplify right side
    145,064.91x = 16,295,822,168.05
  5. Step 5: Solve for x
    x = 16,295,822,168.05/145,064.91
  6. Step 6: Final answer
    x = 112,334.69

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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.