Home / 145,235.43-200,401.38-90,781.20

Finding the Fourth Proportional to 145,235.43, 200,401.38 and 90,781.20

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Solution

The fourth proportional to 145,235.43, 200,401.38 and 90,781.20 is: 125,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,235.43 : 200,401.38 = 90,781.20 : x
  2. Step 2: Convert to fraction form
    145,235.43/200,401.38 = 90,781.20/x
  3. Step 3: Cross multiply
    145,235.43x = 200,401.38 × 90,781.20
  4. Step 4: Simplify right side
    145,235.43x = 18,192,677,758.06
  5. Step 5: Solve for x
    x = 18,192,677,758.06/145,235.43
  6. Step 6: Final answer
    x = 125,263.36

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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.