Home / 145,522.20-200,781.18-85,107.72

Finding the Fourth Proportional to 145,522.20, 200,781.18 and 85,107.72

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Solution

The fourth proportional to 145,522.20, 200,781.18 and 85,107.72 is: 117,425.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,522.20 : 200,781.18 = 85,107.72 : x
  2. Step 2: Convert to fraction form
    145,522.20/200,781.18 = 85,107.72/x
  3. Step 3: Cross multiply
    145,522.20x = 200,781.18 × 85,107.72
  4. Step 4: Simplify right side
    145,522.20x = 17,088,028,448.71
  5. Step 5: Solve for x
    x = 17,088,028,448.71/145,522.20
  6. Step 6: Final answer
    x = 117,425.58

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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.