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Finding the Fourth Proportional to 133,720.90, 184,510.65 and 85,963.30

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Solution

The fourth proportional to 133,720.90, 184,510.65 and 85,963.30 is: 118,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,720.90 : 184,510.65 = 85,963.30 : x
  2. Step 2: Convert to fraction form
    133,720.90/184,510.65 = 85,963.30/x
  3. Step 3: Cross multiply
    133,720.90x = 184,510.65 × 85,963.30
  4. Step 4: Simplify right side
    133,720.90x = 15,861,144,359.15
  5. Step 5: Solve for x
    x = 15,861,144,359.15/133,720.90
  6. Step 6: Final answer
    x = 118,613.80

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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.