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Finding the Fourth Proportional to 133,145.61, 183,742.20 and 75,782.13

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Solution

The fourth proportional to 133,145.61, 183,742.20 and 75,782.13 is: 104,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,145.61 : 183,742.20 = 75,782.13 : x
  2. Step 2: Convert to fraction form
    133,145.61/183,742.20 = 75,782.13/x
  3. Step 3: Cross multiply
    133,145.61x = 183,742.20 × 75,782.13
  4. Step 4: Simplify right side
    133,145.61x = 13,924,375,286.89
  5. Step 5: Solve for x
    x = 13,924,375,286.89/133,145.61
  6. Step 6: Final answer
    x = 104,580.06

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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.