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Finding the Fourth Proportional to 145,099.80, 217,649.70 and 109,670.40

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Solution

The fourth proportional to 145,099.80, 217,649.70 and 109,670.40 is: 164,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,099.80 : 217,649.70 = 109,670.40 : x
  2. Step 2: Convert to fraction form
    145,099.80/217,649.70 = 109,670.40/x
  3. Step 3: Cross multiply
    145,099.80x = 217,649.70 × 109,670.40
  4. Step 4: Simplify right side
    145,099.80x = 23,869,729,658.88
  5. Step 5: Solve for x
    x = 23,869,729,658.88/145,099.80
  6. Step 6: Final answer
    x = 164,505.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.