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Finding the Fourth Proportional to 91,899.60, 137,849.40 and 45,243.60

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Solution

The fourth proportional to 91,899.60, 137,849.40 and 45,243.60 is: 67,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,899.60 : 137,849.40 = 45,243.60 : x
  2. Step 2: Convert to fraction form
    91,899.60/137,849.40 = 45,243.60/x
  3. Step 3: Cross multiply
    91,899.60x = 137,849.40 × 45,243.60
  4. Step 4: Simplify right side
    91,899.60x = 6,236,803,113.84
  5. Step 5: Solve for x
    x = 6,236,803,113.84/91,899.60
  6. Step 6: Final answer
    x = 67,865.40

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Double scale
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Similar ratio
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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.